
NCIS is an American police procedural television series created by Donald P. Bellisario And Don McGill. The series premiered on September 23, 2003.
Starring
- Mark Harmon - Leroy Jethro Gibbs
- Sasha Alexander - Caitlin Todd (eps1-48, 200)
- Michael Weatherly - Anthony DiNozzo (eps1-306, 459)
- Pauley Perrette - Abby Sciuto (eps1-352)
- Sean Murray - Timothy McGee
- Cote de Pablo - Ziva David (eps47-236, 379-380, 388-389)
- Lauren Holly - Jenny Shepard (eps47-113)
- David McCallum - Dr. Donald "Ducky" Mallard
- Rocky Carroll - Leon Vance
- Brian Dietzen - Jimmy Palmer
- Emily Wickersham - Eleanor "Ellie" Bishop (eps243-414)
- Wilmer Valderrama - Nicholas "Nick" Torres
- Jennifer Esposito - Alexandra "Alex" Quinn (eps307-330)
- Duane Henry - Clayton Reeves (eps305-352)
- Maria Bello - Jacqueline Sloane (eps334-406)
- Diona Reasonover - Kasie Hines
- Katrina Law - Jessica "Jess" Knight
- Gary Cole - Alden Parker
Special Guest Stars
- Armand Assante - René "La Grenouille" Benoit
- Bob Newhart - Doctor Walter Magnus (ep174)
- Charles Durning - Ernie Yost (ep30)
- Chris O'Donnell - G. Callen
- Christian Clemenson - Perry Sterling (ep133)
- Daniela Ruah - Kensi Blye (ep464)
- Drew Carey - John Ross (ep346)
- Gena Rowlands - Joann Fielding (ep154)
- Jamie Lee Curtis - Dr. Samantha Ryan
- Jason Antoon - Ernie Malik (eps433, 436)
- Jon Cryer - Dr. Cyril Taft
- Lance Henriksen - Sheriff Clay Boyd (ep130)
- Lily Tomlin - Penelope Langston (ep189)
- LL Cool J - Sam Hanna
- Lucas Black - Christopher LaSalle
- Noah Mills - Jesse Boone (ep445)
- Ralph Waite - Jackson Gibbs
- Robert Wagner - Anthony DiNozzo Sr.
- Rudolf Martin - Ari Haswari
- Scott Bakula - Dwayne Pride
- Shalita Grant - Sonja Percy (ep294)
- Taye Diggs - Aaron Davis (ep300)
- Vanessa Lachey - Jane Tennant
- William Devane - Nicolas Mason (ep164)
- Zoe McLellan - Meredith Brody
Guest Stars
- A Martinez - Tomas Orlando (ep277)
- A. Leslie Kies - Donna Coyne (ep332)
- Aaron Abrams - Todd Price (ep265)
- Aaron Clifton Moten - Wendell Hobbs (ep253)
- Aaron Craven - Eric Riley (ep385)
- Aaron D. Spears - Michael Strickland (ep175)
- Aaron Hendry - Bob Mugford (ep296)
- Aaron Hill - William Blake (ep248)
- Aaron Jaeger - David Ryan (ep228)
- Aaron Jennings - Seth Hendrix (ep340)
- Aaron Lustig - Dr. Victor Kalsa (ep156)
- Aaron McPherson - First Sergeant Louis Tibbens (ep148)
- Aaron O'Connell - Jordan Peralta (ep372)
- Aaron Perilo - Brian Smith (ep205)
- Aaron Ramzi - Amir Hassan (ep314)
- Abbie Cobb - Melanie Keller (ep361)
- Abby Awe - Lucy (ep484)
- Abby Brammell - Heather Dempsey (ep165)
- Abby Carter - Claire O'Donnell (ep395)
- Abe Daniels - Daniel Cliff (ep242)
- Abhi Sinha - Khan (ep257)
- Abigail Breslin - Sandy Watson (ep24)
- Abigail Mavity - Jordyn Wright (ep106)
- Adam Baldwin - Cmdr. Michael Rainer (ep22)
- Adam Busch - Arthur Jankowski (ep313)
- Adam Campbell - Young Donald Mallard
- Adam Chambers - Robbie Santori (ep274)
- Adam Clark - Fred Johnson (ep255)
- Adam Croasdell - Young Angus Clarke
- Adam Cropper - Jared Clarkson (ep444)
- Adam Ferrara - Sammy Craig (eps407, 467)
- Adam Hendershott - Josh (ep21)
- Adam Hollick - Christopher Blaze (ep421)
- Adam Huss - Lt. Michael Arnett (ep99)
- Adam J. Harrington - Sam Hendrix (ep372)
- Adam Kaufman - Detective Philip McCadden (ep154, 157)
- Adam Kulbersh - Alan Katzenbach (ep203)
- Adam Mayfield - Tall Tony (ep302)
- Adam Silver - Dabney (ep322)
- Adam Tsekhman - Omar Hassan (ep281)
- Adam William Zastrow - Ronald Kepczak (ep391)
- Adam Wylie - Darin Spotnitz (ep17)
- Adetokumboh M'Cormack - Matthew Rousseau
- Adilah Barnes - Miss Nellie (ep405)
- Adria Tennor - Angela Dresser (ep305)
- Adrian LaTourelle - Benson Honeycutt (ep249)
- Adrian Sparks - Hugo Radcliffe (ep304)
- Adriana Ducassi - Reyna Vargas (ep454)
- Aixa Clemente - Nancy (ep450)
- AJ Achinger - Spencer Cox (ep378)
- AJ Meijer - Dutch Naga (ep425)
- Aja Evans - Taylor Turner (ep250)
- Ajay Mehta - Parviz Najar (ep81)
- Al Coronel - Lt. Wilton Buck (ep339)
- Al Espinosa - Dr. Tom Verne (ep10)
- Al Rodrigo - Police Captain Martinez (ep451)
- Al Sapienza - Commander William Foley (ep18), Maurice Riva (eps457-458)
- Alain Ali Washnevsky - Jamal Antar (ep389)
- Alaina Huffman - Dana Arnett (ep99)
- Alan Dale - Tom Morrow
- Alan Rachins - Bud (ep450)
- Alan Ruck - Ward Beringer (ep243)
- Alan Smyth - Nick Kerry (ep94)
- Alanna Ubach - Sofia Martinez (eps247, 279)
- Alano Miller - Vince Armstrong (ep271)
- Alastair Duncan - Peter Velo (ep261), Ron Davenport (ep461)
- Alberto De Diego - Ethan Wynn (ep334)
- Albie Selznick - Marty Allen (ep74)
- Alex Ball - Richard Granger (ep362)
- Alex Blue Davis - Vernon Palumbo (ep329)
- Alex Carter - Knox Ellicott (ep321)
- Alex Dodd - Qassam (ep16)
- Alex Feldman - Thomas Baird (ep410)
- Alex Fernandez - Joseph Flores (eps194-195)
- Alex Hyde-White - Dr. Adam Tallridge (ep155)
- Alex Kingston - Miranda Pennebaker (ep218)
- Alex Meneses - Vanessa (ep20)
- Alex Nesic - Alex Rudd (ep68)
- Alex Quijano - Blake Huxley (ep294)
- Alex Sparrow - Maxim Dovhal (ep426)
- Alex Veadov - Sergei Mishnev
- Alexa Fischer - Commander Jennifer Wade (ep218)
- Alexa Hamilton - Sybil Rigg (ep355)
- Alexander Bertrand - Frank Sobchek (ep478)
- Alexander Wraith - Farshad Saravi (ep238)
- Alexandra Barreto - Rena Oliver (ep176)
- Alexandra Holden - Brooke Fenten (ep217)
- Alexandra Krosney - Nadia Harcourt (ep64)
- Alexandra Lydon - Natalie Dalton (ep87)
- Alexis Carra - Kelly Conner (ep349)
- Alexis Stier - Farrah (ep334)
- Ali Hillis - Antonia Morello (ep353)
- Aliah Whitmore - Soraya Zoranj (ep195)
- Alice Hunter - Janet Shor (ep298)
- Alice Krige - Maggie Clarke (ep261)
- Alicia Coppola - Faith Coleman
- Alicia Lagano - JoAnn Allman (ep301)
- Alicia Urizar - Gabriella (ep330)
- Alicia Ziegler - Marine Corporal Jameson (ep183)
- Alimi Ballard - Gayne Levin
- Alina Phelan - Amy (ep385)
- Aline Elasmar - Annie Hankamer (ep447)
- Alisha Boe - Farrah Meyers (ep288)
- Alison Haislip - Hannah Banks (ep259)
- Alla Korot - Linda DeMarco (ep145)
- Allan Louis - Captain Dominick Wayne
- Allan McLeod - Ted (ep417)
- Allen Maldonado - Raymond Smith (ep337)
- Allison McAtee - Spandaxia (ep201)
- Ally Maki - Marie Manna (ep287)
- Aloma Wright - Nurse Ethel Washington (ep69)
- Alon Aboutboul - Prince Omar Ibn Alwaan (ep150)
- Alvin Cowan - Metro P.D. LEO (ep269)
- Alyson Gorske - Ashley Winslow (ep475)
- Alyson Reed - Mrs. Keogh (ep347)
- Amad Jackson - Phil Proderman (ep332)
- Amanda Clayton - Lieutenant Rachel Donahue (ep453)
- Amanda Detmer - Charlotte Bodizinski (ep411)
- Amanda Fuller - Jen Shields (ep29)
- Amanda Payton - Misty Boxlarter (ep340)
- Amanda Schull - Kay Barlow (ep424)
- Amanda Walsh - Ellen Roberts (ep213)
- Amaris Davidson - Olivia (ep359)
- Amber Friendly - Eden Greyson (ep441)
- Amelia Bryn Smith - Rebecca Taffet (ep132)
- Amielynn Abellera - Kaitlyn Holcomb (ep358)
- Amir Arison - Prince Sayif Ibn Alwaan (ep150)
- Amir Korangy - Professor Zahir Najjar (ep391)
- Amrapali Ambegaokar - July Wunderman (ep408)
- Amy Carlson - Karen Sutherland (ep104)
- Amy Gumenick - Katrina Cooper (ep308)
- Amy Landecker - Dr. Ellen Gracey (ep180)
- Amy Letcher - Fiona (ep333)
- Amy Sloan - P.O. Cynthia Cluxton (ep27)
- Amy Stewart - Katie Happ (ep214)
- Ana Rey - Museum Curator (ep347)
- Anahi Bustillos - Doctor Sarah Hildegard (ep412)
- Anastasia Baranova - Melissa Canon (ep382)
- Andi Carnick - Penny Block (ep174)
- Andi Chapman - Commitee Deputy Chair (ep331)
- Andrea Bogart - Melissa Tourney (ep227)
- Andrea C. Robinson - Midge Watkins (ep212)
- Andrea Grano - Eleadora Rey (ep310)
- Andrew Asper - Mitch Greyson (ep334)
- Andrew Bilgore - Franklin Morrison (ep374)
- Andrew Borba - Dr. Phillip Heller (ep134)
- Andrew Bowen - Merrick Gomer (ep310)
- Andrew Caple-Shaw - P.O. Jerry Smith (ep51)
- Andrew Elvis Miller - Sam Novak (ep448)
- Andrew Friedman - Martha's Partner (ep239)
- Andrew Hawkes - Dan Campbell (eps288, 312)
- Andrew Lander - Young Jackson Gibbs (ep241)
- Andrew Lukich - Commander Louis Wexler (ep255)
- Andrew Pifko - Miles Thatcher (ep409)
- Andrew Puente - Joe Smiddy (ep334)
- Andrew Rothenberg - Bruce Solomon (ep123)
- Andrew Santiago - Matty (ep475)
- Andrew St. John - Abraham Lycek (ep252)
- Andrew Thacher - Paul Westgard (ep163)
- Andy Beckwith - Chester Grimm (ep303)
- Andy Comeau - Detective Tom Logan (ep393)
- Andy Favreau - Jim Hillcot (ep460)
- Andy Hoff - Lt. Paull (ep301)
- Andy Milder - Gene (ep269)
- Andy Umberger - Agent Freedman (ep13)
- Andy Wagner - Officer Cody (ep309)
- Andy Walken - Young Nicholas Mallard (ep293)
- Angela E. Gibbs - Eden Penzance (ep365)
- Angela Lin - Sheila Addison (ep411)
- Angela Trimbur - Nicole Trainer (ep324)
- Angelo Tiffe - Jed Hamilton (ep315)
- Anil Kumar - Adem Korkmaz (ep280)
- Anisha Adusumilli - Veeda Rajab (ep452)
- Anjali Bhimani - Samantha Petrie (ep343)
- Ann Hu - Heather White (ep354)
- Anna Campbell - Andrea Falco (ep417)
- Anna Grace Barlow - Karen/Sasha Myshkin (eps401, 403)
- Anna Khaja - Eliza Hutchins (ep375)
- Anna Osceola - Grace Watkins (ep212)
- Annalisa Cochrane - Lisa Swenson (ep450)
- Anne Bedian - Hamida (ep109)
- Anne Judson-Yager - Emmy Poole (ep44)
- Anne Leighton - Inga Petrov (ep377)
- Anne-Marie Johnson - Col. Stacey Radcliffe (ep101), Senator Selena Grayson (ep455)
- Annie Corley - Deputy Secretary of State Anna Elliot (ep33)
- Annie Little - Meri Dade (ep407)
- Annie O'Donnell - Agnes Anderstout (ep198)
- Annie Tedesco - Liz Cortland (ep290)
- Annie Wersching - Deputy DA Gail Walsh (ep172)
- Ansel Carpenter - Young Billy (ep429)
- Anson Scoville - Peter Shrewe (ep6)
- Anthony Alabi - Christopher Clayton (ep330)
- Anthony Armatrading - Wilson N'Diaye (ep58)
- Anthony Brandon Wong - Russell Nguyen (ep115)
- Anthony Heald - Guyman Purcell (ep40)
- Anthony Keyvan - Elan Ghorbani (ep282)
- Anthony Konechny - Simon Felcher (ep401)
- Anthony L. Fernandez - Luis Carter (ep405)
- Anthony Montgomery - Corporal George Linden (ep120)
- Anthony Starke - Derrick Choyce (ep102)
- Anthony Tyler Quinn - Clarence Daniels (ep255)
- Antoni Corone - Carl Bannon (ep466)
- Antonio Jaramillo - Pedro Rodriguez (ep428)
- Antonio Sabato Jr. - Dale Kapp (ep123)
- Anzu Lawson - Sonia Bell (ep422)
- April Brinson - Genevieve Bell (ep343)
- April Matson - Carolyn (ep79)
- April Parker Jones - Elaine Davis (ep129)
- Aramis Knight - Nick Miller (ep175)
- Arienne Mandi - Emma Sweeney (ep346)
- Aris Alvarado - Aris Alvarado (ep65)
- Arjay Smith - Roy (ep152)
- Arlen Escarpeta - Randall White (ep270)
- Arlene Santana - Constance Shaw (ep371)
- Armando Acevedo - Rene Romero (ep432)
- Arnell Powell - Abraham Moussalah (ep77)
- Arnold Vosloo - Amit Hadar
- Arron Shiver - Landers Orton (ep230)
- Artur Zai Barrera - Rafi Nazar (ep424)
- Arturo Del Puerto - Edward "Collarbone" Rosario (ep277)
- Asante Jones - Detective Andy Kochofis (ep10)
- Ashley Jones - Nancy Douglas (ep335)
- Ashley Liao - Hayley (ep369)
- Ashley Platz - Kat Hanna (ep429)
- Ashley Scott - Dana Hutton (ep159)
- Ashton Moio - Michael Reardon (ep203)
- Asif Ali - Phil (ep206)
- Assaf Cohen - Eli "Goliath" Lisack (ep84)
- Aubrey Deeker - Brian Mitchell (ep202)
- Audrey Moore - Chloe Crane (ep368)
- Audrey Wasilewski - Shirley Wilkes (ep24)
- Augustus Prew - Anton Markin (ep239)
- Austen Parros - Marcus (ep405)
- Austin Cauldwell - Travis Jacobs (ep446)
- Austin Highsmith - Darlene Jones (ep320)
- Austin Majors - Jeremy Hodges (ep65)
- Austin Stout - Timothy Griffin (ep59)
- Ava Gaudet - Lisa Bock (ep178)
- Aviva - Shannon Fielding (eps117, 154)
- B.J. Mitchell - Janitor's Son (ep275)
- Babar Peerzada - Sadiq Samar (ep282)
- Bahni Turpin - Camille West (ep401)
- Barbara Eve Harris - Stacy Bergin (ep237)
- Barbara Niven - Dr. Elaine Burns (ep50)
- Barbara Tarbuck - Mrs. Donaldson (ep18)
- Barrett Foa - Eric Beale (eps135-136)
- Barry Shabaka Henley - Earl Goddard (ep321)
- Bart Johnson - Dean Hudson (ep285)
- Bart McCarthy - George Hawkins (ep265)
- Barton Tinapp - Agent Cobb (ep15)
- Basil Wallace - Delphin Abaka (ep102)
- Beau Billingslea - Denny Rydell (ep337)
- Beau Wirick - Joseph Hagen (ep259)
- Becky Wahlstrom - FET Marine Staff Sergeant Catherine Littleton (ep195)
- Bellamy Young - ATF Special Agent Melinda Stone (ep21)
- Bellina Logan - Commander Roberta Stock (ep397)
- Ben Begley - Jimmy Lancaster (ep338)
- Ben Bode - Dan Reynolds (ep356)
- Ben Cain - Janitor (ep275)
- Ben Giroux - Tiny Tony (ep302)
- Ben Murphy - Captain Veitch (ep7)
- Ben Parrillo - Rex Eberlee (ep46)
- Ben Reed - CPO Ian Goetz (ep27)
- Ben Tolpin - Jerry Neisler (ep172)
- Ben Vereen - Lamar Addison (ep245)
- Benita Krista Nall - Amanda Wright (ep427)
- Benjamin Barrett - Theo Benes (ep449)
- Benjamin Brown - Captain Arvidas (ep65)
- Benjamin King - Ron Sands (ep165)
- Benjamin Stockham - Henry Marshall (ep304)
- Benny Nieves - Frank Trujillo (ep3)
- Bernard Curry - Shamus Quinn (ep214)
- Bernard White - Ambassador Qasim Saydia (ep126)
- Bernardo De Paula - Alfredo Montez (ep280)
- Bertila Damas - Renee Quichera (ep384)
- Bess Armstrong - Denise O'Hara (ep250)
- Beth Riesgraf - Maxine/Max Destructo (ep178)
- Betsy Baker - Ramona (ep433)
- Betsy Brandt - PO2 Barbara Swain (ep25)
- Betsy Rue - Sasha Gordon (ep112)
- Beverly Leech - Vice Admiral Janet Kleibor (ep275)
- Bill Dawes - Clayton Wills (ep449)
- Bill Heck - Cory Mitas (ep100)
- Bill O'Neill - Zach (ep361)
- Bill Sage - Reed Talbot (ep116)
- Billy "Sly" Williams - Francis "Cheech" Del Conte (ep291)
- Billy Aaron Brown - Donny Potter (ep43)
- Billy Brown - Chief Petty Officer Velat (ep31)
- Billy Dee Williams - Leroy Jethro Moore (eps215, 258)
- Billy Lush - Fisher Hyland (ep284)
- Billy Malone - NCIS Mechanic Dominic (ep460)
- Billy Miller - Ezra Moretti (ep438)
- Billy Smith - Jim Virgil (ep228)
- Blake Bashoff - Josh Cooper (ep77)
- Blake Berris - Walter Shibberd (ep323)
- Blake Hood - Bennett Jermaine (ep266)
- Blake Lindsley - Belinda Carter (ep257)
- Blake Robbins - Commander Scott Martin (ep218)
- Blake Shields - Potential Recruit (ep13)
- Blue Deckert - Federal Marshal (ep28)
- Blythe Auffarth - Melanie (ep154)
- Bo Kane - William Forman (ep358)
- Bob Stephenson - Kevin Lane (ep322)
- Bobby Hosea - Captain Austin Sears (ep159)
- Boise Holmes - Security Guard (ep274)
- Bonnie Bartlett - Dr. Sylvia Chalmers (ep12)
- Bonnie Dennison - Lindsey (ep188)
- Boyana Balta - Emily Cross (ep476)
- Brad Benedict - Lieutenant Nick Rossmore (ep288)
- Brad Beyer - Joe Westcott (eps216-217)
- Brad Greenquist - Dr. Damon Shore (ep152)
- Brad Hawkins - Sgt. Aaron Barnes (ep13)
- Brad Lee Wind - John Dunn (ep302)
- Braden Lynch - Neal Sherwood (ep308)
- Bradley White - Bart Powell (ep52)
- Brady Smith - David Cross (ep85)
- Braeden Lemasters - Noah Taffet (ep132)
- Brandi Burkhardt - Desk Clerk (ep197)
- Brando Eaton - Patrick Ellis (ep148)
- Brandon Barash - Derrick Paulson (ep72)
- Brandon Bell - Ranger Jake (ep149)
- Brandon Black - Martin Polk (ep431)
- Brandon Brooks - Crispin Shaker, Jr. (ep486)
- Brandon Davis - Jimmy (ep2)
- Brandon Fobbs - Ben Cooper (ep191)
- Brandon Gibson - Hal Beem (ep246)
- Brandon Largent - Corporal Kenneth Merrill (ep62)
- Brandon Olive - Ross Kilmer (ep202)
- Brandon Quinn - Greg Abell (ep309)
- Brea Bee - Mrs. Richter (ep433)
- Brenda Kate - Sheila (ep446)
- Brendan McCarthy - Owen Dixon (ep297)
- Brendan Patrick Connor - Travis "Piggy" Phelps (ep272)
- Brennan Elliott - Martin Stillwell (ep168)
- Brennan Keel Cook - Travis Williams (ep432)
- Brent Anderson - Mason Green (ep316), SecDef Duncan Mathison (ep487)
- Brent Bailey - Kyle Freeman (ep382)
- Brent Briscoe - Buzz (ep326)
- Brent Huff - Marv Hebner (ep240)
- Brett Cullen - Captain Todd Gelfand (eps69-70)
- Brett Davern - Kris Taylor (ep215)
- Brett DelBuono - Brian Dokes (ep286)
- Brett Rice - Captain RJ Hammond (ep296)
- Brett Rickaby - Steve Diamond (ep142)
- Brett Tucker - Geoffrey Brett (ep190)
- Brian Ames - Matthew Duques (ep393)
- Brian Avers - Mike Renko (eps135-136)
- Brian Cousins - Jacob Torrance (ep87)
- Brian Elerding - Phil Kurjak (ep321)
- Brian George - Dr. Ameen Temani (ep93)
- Brian Gross - Petty Officer Colin Dixon (ep107)
- Brian Hallisay - David Crocker (ep342)
- Brian Howe - Sheriff Tom Barrett (ep82)
- Brian Huskey - Front Desk Clerk, Chevy Chase Lodge (ep242)
- Brian Ibsen - Bryce Tolson (ep260)
- Brian Kimmet - George Barbado (ep339)
- Brian Leckner - Ben (ep230)
- Brian Letscher - Sam Bennett (ep123)
- Brian Markinson - Sgt. Dan Trask (ep87)
- Brian McNamara - Noah Sykes (ep373)
- Brian Michael Jones - Terry Mahler (ep307)
- Brian Patrick Wade - Private David Singer (ep143)
- Brian Skala - David Howard (ep176)
- Brian Stepanek - Karl Chunk/Homeless Guy/Arda Dogan (ep399)
- Brian Thomas Smith - Larry (ep437)
- Brian Thompson - MCPO Vince Nutter (ep17)
- Briana Lane - Diane Boyle (ep351)
- Brianna Brown - Melinda Martin (ep473)
- Brianna Reed - Libby (ep445)
- Brighton Sharbino - Young Abby Sciuto (ep223)
- Brigid Brannagh - Catherine Reynolds (ep42), Senator Constance Miller (eps451, 456)
- Brit Shaw - Allison (ep253)
- Brittney Powell - Jamie Carr (ep52)
- Bronson Pinchot - George Burton (ep264)
- Brooke Lyons - Tammy LaRoche (ep484)
- Brooke Nevin - Rachael Sparks (ep143)
- Brooklyn McLinn - Sergeant Jim Gilroy (ep109)
- Brooks Almy - Mrs. MacDonald (ep4)
- Bruce Boxleitner - Clifford Chase (eps169, 326)
- Bruce French - Floyd Vernon (ep61)
- Bruce Gray - Jonathan Overmeier (ep11)
- Bruce Locke - Kai Chen (ep322)
- Bruce McGill - Henry Rogers (ep325)
- Bruce Nozick - Harvey Grossman (ep157), Lacy (ep467)
- Bruce Thomas - Richard Porter (ep297)
- Bryan Batt - Dalton Greenbrick (ep294)
- Bryce Johnson - Lieutenant David Shankton (ep154), Eddie Macklin (ep244)
- Brynn Thayer - Sheriff Mary Talbot (ep393)
- Burgandi Trejo Phoenix - Rachel Calley (ep466)
- Burl Moseley - Male Nurse (ep392)
- Burnadean Jones - Sally Smith (ep50)
- Burt Bulos - Abog Galib (eps69-70)
- Burt Grinstead - William Greco (ep255)
- Caitlin Carver - Megan Porter (ep297)
- Caleb Alexander Smith - Gage Winchester (ep439)
- Cameron Bender - Martin Gates (ep476)
- Cameron Cowperthwaite - Thomas Fletcher (ep359)
- Cameron Daddo - Dan Mayfield (ep169)
- Cameron Deane Stewart - Ben Koss (ep266)
- Cameron Gellman - Daniel Holloway (ep483)
- Cameron Goodman - Maddie Tyler (ep101)
- Cameron Jebo - Drill Leader Golan (ep272)
- Cameron Monaghan - Nick Peyton (ep180)
- Cameron Radice - Todd Nicholas (ep357)
- Cameron Watson - Randy (ep221)
- Camryn Grimes - Laney Alimonte (ep383)
- Candice Coke - Detective Danielle Hamilton (ep103)
- Cara Buono - Commander Sarah Resnik (ep146)
- Cara Pifko - Kelsey Donner (ep183)
- Carl Beukes - John Calfa (ep377)
- Carl Lumbly - Rear Admiral Beau Hindley (ep181)
- Carla Gallo - Melissa Wheeler Fox (ep124)
- Carlease Burke - D'Arcy McKinna (eps132, 147)
- Carlin James - Felix Pittorino (ep354)
- Carlos Gómez - Chief Petty Officer Reyes (ep6), Admiral Carlos Mendoza (ep469)
- Carlos Lacamara - Joe Tabarez (ep40)
- Carlos Pratts - Isaac Morales (ep430)
- Carlos Sanz - Agent Gonzales (ep9)
- Carlton Wilborn - Charles Garrett (ep247)
- Carly Hughes - Vicky Meyer (ep461)
- Carol Locatell - Renee Prewdome (ep319)
- Carole Weyers - Trish Wallace (ep260)
- Caroline Lagerfelt - Mrs. Victoria Mallard (ep316)
- Caroline Whitney Smith - Molly (ep393)
- Carolyn Hennesy - Tara Flynn (ep442)
- Carrie Wiita - Lana (ep192)
- Carson Fagerbakke - Tanya Ellsworth (ep461)
- Carter MacIntyre - Benny Sitano (ep333)
- Caryn West - Karen Fox (ep241)
- Cas Anvar - Masoud Tariq/Wasim al Fulani (ep82)
- Casey Sander - Ed Gantry (ep117)
- Cassandra Creech - Amy Tano (ep374)
- Cassidy Freeman - Eva Azarova (ep294)
- Cassi Thomson - Angie Grey (ep363)
- Cassius Willis - Russell Wallace (ep210)
- Catherine Dent - Whitney Sharp (eps170-171)
- Catherine Kresge - Stella Brooks (ep233)
- Cay Ryan Murray - Teagan Fields (ep433)
- Cayden Boyd - Danny Hall (ep359)
- CCH Pounder - Loretta Wade (eps252-253)
- Cedric Begley - Blake (ep369)
- Cesili Williams - Café Waitress (ep269)
- Chad Donella - John Briggs (ep49)
- Chad Gall - Lieutenant Hank Joplin (ep214)
- Chad Lindberg - Joey Peanuts (eps184, 355)
- Chad Todhunter - Pete Lewis (ep128)
- Chad Willett - Detective Primo Monteleone (ep35)
- Challen Cates - Fay Gussman (ep249)
- Chaney Kley - Corporal Paul Brinkman (ep2)
- Channon Roe - Greg Lambro (ep125)
- Chantelle Barry - Patrice Jansen (ep344)
- Charlene Amoia - Denise Mancuso (ep341)
- Charles Carpenter - Sheriff Marcus Mayes (ep404)
- Charles Carroll - Dr. Pryor (ep124)
- Charles Duckworth - Joe Bennes (ep64)
- Charles Parnell - Colonel Dick Jestern (ep140)
- Charles Shaughnessy - Balthazar Kilmeany (ep316)
- Charles Tyler Kinder - Young McGee (ep368)
- Charles Walker - Hotel Clerk (ep31)
- Charley Koontz - Max Hoffman (ep479)
- Charlie Bodin - Keith Messier (ep314)
- Charlie Hofheimer - Bobby Wilkes (ep6)
- Charlie Robinson - Ray Jennings (ep359)
- Charlie Schlatter - Lorne Davis (ep256)
- Chase Ryan Jeffery - Kyle Zolin (ep43)
- Chastity Dotson - Monica King (ep255)
- Chelcie Ross - Joseph Hanlon (ep253)
- Chelsea Alden - Stephanie Vairo (ep354)
- Chelsea Field - Jocelyn Wayne (ep61)
- Chelsea Harris - Danielle Benton (ep240)
- Chelsea Tavares - Ramona Whistler (ep396)
- Cherise Boothe - Female Marine Officer (ep327)
- Cheryl Ladd - Mary Courtney (ep192)
- Cheryl Texiera - Jezebel (ep331)
- Cheryl White - Rebecca Biddle (ep76)
- Chet Grissom - Rupert Kittridge (ep402)
- Chloe Lanier - Emma Carter (ep256)
- Chris Agos - Noah Finch (ep421)
- Chris Bert - Pizza Delivery Guy (ep276)
- Chris Boudreaux - Jesse Duncan (ep404)
- Chris Browning - Tom Dalton (ep413)
- Chris Bruno - Captain James Powell (ep149)
- Chris Butler - Clarence (ep402)
- Chris Carmack - Kevin Nelson (ep127)
- Chris Coy - Davis Riley (ep271)
- Chris Ellis - Gunnery Sergeant John Deluca (ep28)
- Chris Gann - Captain Henry Nikolai (ep390)
- Chris Gartin - Jason Tupperman (ep289)
- Chris Heuisler - Seaman Joe Wilkins (ep27)
- Chris Johnson - Petty Officer James Morgan (ep17)
- Chris L. McKenna - Eric Webb (ep460)
- Chris Marrs - James Meyer (ep263)
- Chris McGarry - Peter Sanger (eps216-217)
- Chris Mulkey - Captain Richard Owens (ep115)
- Chris Olivero - Dave Simmons (ep3)
- Chris Payne Gilbert - Wesley Rowan (ep63)
- Chris Petrovski - Lev Trotski (eps457-458)
- Chris Tardio - Kenneth Dixon (ep87)
- Chris Ufland - Gus Zawadzki (ep456)
- Chris Webster - Randall Clark (ep487)
- Chris William Martin - Brian Taylor (ep103)
- Chrissie Fit - Mary Evans (ep470)
- Christian Barillas - Rafa Lopez (ep442)
- Christian Campbell - Nick Kingston (ep117)
- Christian Gehring - Lieutenant Mason Winslow (ep475)
- Christie Lynn Smith - Cara Barnsway (ep198)
- Christina Chang - Valeri Page (ep297)
- Christina Cox - Georgia Wooten (ep175)
- Christina Ferraro - Mary Choi (ep329)
- Christina Kirk - Dr. Clara Logan (ep465)
- Christine Dunford - Jeri Fleckman (ep410)
- Christine Garver - Tiffany Leonne (ep295)
- Christine Horn - Doctor Felicia Serena (ep339)
- Christine Lakin - Rachel Wells (ep155)
- Christine Woods - Rebecca Jennings (ep127)
- Christinna Chauncey - Andrea Morton (ep141)
- Christopher Allport - Capt. Dan Karzin (ep56)
- Christopher Amitrano - Local LEO (ep378)
- Christopher B. Duncan - Dale Harris (ep275)
- Christopher Cousins - Mr. Jones (ep134)
- Christopher Darga - Skip Harris (ep111)
- Christopher Foley - Navy Ensign Philip Bosch (ep161)
- Christopher Goodman - Michael West (ep300)
- Christopher Lloyd - Joseph Smith (ep398)
- Christopher M. Dukes - Phil (ep470)
- Christopher Maher - Capt. Aris Mahir (eps69-70)
- Christopher Michael Moore - Miles Larson (ep80)
- Christopher Redman - Carl Fleming (ep177)
- Christopher Shyer - Kyle Boone (ep49)
- Christopher Stapleton - Lt. Don Wade (ep37)
- Christopher T. Wood - Congressman Stephen Shaw (ep323)
- Christopher Wiehl - Ramsay Whitman (ep318)
- Christy St. John - Lieutenant Renee Harlan (ep448)
- Chuck Filipov - Roy Smith (ep422)
- Ciara Bravo - Amanda Campbell (ep307)
- Ciera Payton - Laurie Perkins (ep315)
- Claire Coffee - Nikki Crawshaw (ep73)
- Clare Carey - Ann Gibbs (eps200, 258)
- Clare Gillies - Christine (ep444)
- Clark Freeman - Bill Lester (ep347)
- Claudia Black - Velvet Road (ep160)
- Claudia Christian - Agent Louise Moreau (ep317)
- Clayton Snyder - Sampson (ep254)
- Cleo Anthony - Zachary Bucket (ep261)
- Cleo King - Della Robinson (ep40)
- Cliff Chamberlain - Peter Buck (ep381)
- Cliff Marc Simon - Ship Captain (ep232)
- Clint Culp - Roy Baxter (ep347)
- Clyde Kusatsu - Benjamin Franklin (ep141), Mr. Rin (ep316)
- Coby Ryan McLaughlin - Pete Wilkins (ep332)
- Cody John - Freddy (ep466)
- Cokey Falkow - Deeter Johanson (ep167)
- Colby French - Viggo Kiln (ep219)
- Coley Mustafa Speaks - Omar Nitro (ep333)
- Colin Hanks - Richard Parsons
- Colleen Porch - Jill Meyers (ep37)
- Connie Jackson - Elaine
- Connor Kalopsis - Oscar (ep265)
- Connor Trinneer - James Dempsey (ep68)
- Conor Dubin - Jeremy Pryor (ep37)
- Conor O'Farrell - William Danforth (ep62)
- Conrad Roberts - Benjamin King (ep39)
- Cooper Huckabee - Kyle Larson (ep375)
- Cooper Thornton - Peter Vandevere (ep229)
- Corbin Allred - Corpsman Milano (ep6)
- Corey Mendell Parker - Metro Police Officer Bilik (ep262)
- Corey Reynolds - Lieutenant Commander Aaban El-Sayad (ep148)
- Corey Sorenson - Anthony Paxton (ep146)
- Corey Stoll - Martin Quinn
- Corin Nemec - Len Grady (ep87)
- Corri English - Lisa Delgado (ep85)
- Cory Blevins - Father (ep260)
- Costas Mandylor - Tomas Mendez (eps235-236)
- Cotter Smith - Agent Sam Stevens (ep69)
- Courtney Ford - Navy Petty Officer 2nd Class Kaylen Burrows (ep161)
- Courtney Gains - Gary Silverstein (ep72)
- Courtney Henggeler - Scorpio Sinn (ep140)
- Courtney Hope - Judy Sloan (ep273)
- Coy Stewart - Brandon Conway (ep313)
- Craig Parker - Major Richard Huggins (ep256)
- Craig Robert Young - Ian Lipovetskiy (ep326)
- Craig Welzbacher - George Mansur (ep35), Landon Kinkaid (ep485)
- Cristine Rose - Pat Stone (ep19)
- Curt Cornelius - Cody Oaks (ep274)
- Cyd Strittmatter - Joanne Wright (ep106)
- Cyrus Bobak - Aazar Atwa (ep362)
- Czarina Mireles - Robyn Kael (ep469)
- D.C. Douglas - Tom Speakman (ep252)
- Dabney Coleman - John Sydney (ep366)
- Daeg Faerch - Alex Russo (ep426)
- Dahlia Salem - Maria De La Rosa (ep296)
- DaJuan Johnson - Edward Scott (ep400)
- Dale Godboldo - Cy (ep379)
- Dale Pavinski - Stephen O'Neill (ep279)
- Dalila Ali Rajah - Mary Falco (ep311)
- Dameon Clarke - Paul Dockry (ep242)
- Damian Joseph Quinn - Travis Baltoni (ep441)
- Damian O'Hare - Allen Kane (ep305)
- Damien Leake - Henry Bennett (ep395)
- Damon Dayoub - Adam Eshel
- Dan Hildebrand - Cassio Chavez (ep303)
- Dan Lauria - Morgan Cade (ep339)
- Dan Martin - Mail Carrier (ep208)
- Dan Thiel - Joe Hankos (ep277)
- Dan Ziskie - Captain Ross Vetter (ep42)
- Dana L. Wilson - Dr. Erica Bell (ep382)
- Dane Northcutt - Major Timothy Kerry (ep1)
- Danica McKellar - Erin Kendall (ep37)
- Daniel Cummings - Sheriff's Deputy Hicks (ep302)
- Daniel DiMaggio - Noah Richter (ep433)
- Daniel E. Smith - Cal Frasier (eps258, 366)
- Daniel Gillies - Peter Malloy (ep166)
- Daniel Hagen - Calvin Hopper (ep73)
- Daniel Hugh Kelly - Admiral Kendall (ep257)
- Daniel Jay Shore - Benjamin Horlacher (ep40)
- Daniel Louis Rivas - Kyle Davis (eps190, 212)
- Daniel Peera - Nasser Al-Kamal (ep409)
- Daniel Polo - Parker Ryan (ep210)
- Daniel Roebuck - Matthew Lake (ep58)
- Daniel Sauli - Gus Templeton (ep158)
- Daniel Steven Gonzalez - Rico Ruiz (ep349)
- Daniel Travis - Father (ep134)
- Daniel Zacapa - Detective Martin Alonzo (ep478)
- Daniel Zolghadri - Luke Harris
- Daniela Ruah - Kensi Blye (eps135-136)
- Danielle Bisutti - Ashley Winter (ep220)
- Danna Brady - Judy (ep206)
- Danneel Harris - Jessica Shore (ep127)
- Danny Nucci - Gordon Fremont (ep219)
- Daphne Ashbrook - Donna Peyton (ep180)
- Daphne Zuniga - Stacy Gordon (ep393)
- Darby Stanchfield - Shannon Gibbs
- Darin Toonder - Curt Shapiro (ep310)
- Dariush Kashani - Ezmaray Daoub (ep126)
- Darri Ingolfsson - Dwight Colton (ep380)
- Darryl Alan Reed - Taxi Driver (ep270)
- Daryl C. Brown - Lovinder Prasad (ep358)
- Dave Florek - Virgil McKeever (ep415)
- Dave Monahan - Randy Stimson (ep177)
- Dave Power - Corporal Dave Ramsey (ep2)
- David Andrews - Errol Coyne (ep283)
- David Andriole Corrigan - Lieutenant Commander Robbins (ep4)
- David Barrera - Charlie Mills (ep83)
- David Batiste - Max Phillips (ep84)
- David Bianchi - Kyle Jennings (ep431)
- David Blue - Charlie Samuels (ep443)
- David Burke - George Ingram (ep391)
- David Carpenter - Henry Hoss (ep382)
- David Carzell - Michael Hodge (ep404)
- David Chisum - Dr. David Woods (eps290, 298)
- David Clennon - Max Ellswood (ep189)
- David Dayan Fisher - Trent Kort
- David de Lautour - Daniel Sturgis (ep151)
- David Dean Bottrell - Donald Linder (ep220)
- David DeLuise - Michael Franklin (ep381)
- David Diaan - Farid Bawali (ep191)
- David Eigenberg - Ted Bankston (ep122)
- David Fabrizio - Col. Frederick Cooper (ep77)
- David Gautreaux - Richard Colford (ep260)
- David Haydn-Jones - Captain Jim Mills (ep105)
- David Henrie - Willy Shields (ep29)
- David Hoflin - Randall J. Kersey (eps216-217)
- David Keith - Captain Mike Watson (ep24)
- David L. King - Lance Rama (ep381)
- David Lengel - Carlton Laymer (ep315)
- David Lipper - Sgt. Roger Caine (ep38)
- David Magidoff - Michael Seelus (ep164)
- David Marciano - Bartender (ep27)
- David Mattey - Homeless Man (ep256)
- David Meunier - Wade Cutler (ep447)
- David Monahan - Petty Officer Drew/Sean Travis (ep7)
- David O'Donnell - Jeb (ep7)
- David Paluck - Glen Webb (ep361)
- David Pressman - Lewis Dacey (ep356)
- David Ramsey - NCIS Agent Richard Owens (ep5)
- David Rees Snell - Morgan Hunt (ep196)
- David S. Lee - Veli Tupolev (ep197)
- David Shatraw - Bobby Quinn (ep251)
- David St. Louis - Gerald Lucas (ep153)
- David Starzyk - Allen J. Carter (ep83), Councilman Allan Berger (ep459)
- David Sullivan - Larry Krone (ep165)
- David Tom - Maple (ep287)
- Daya Vaidya - Keisha "Summer Diamond" Scott (ep39)
- Dayo Ade - ER Orderly (ep94)
- Dean Cameron - Landlord (ep256)
- Dean Chekvala - Frank Holtz (ep85)
- Dean McDermott - LCDR Allan Witten (ep42)
- Dean Norris - Gunnery Sergeant Vestman (ep12)
- Deanna Russo - Ashley (ep99)
- Deanne Lauvin - Rebecca Haswell (ep449)
- Deb Hiett - Laura Ramirez (ep429)
- Debbie Campbell - Mary Elizabeth Donahue (ep85)
- Deborah Strang - Diane Warner (ep434)
- Debra Christofferson - Rita Gregg (ep215), Uta (ep487)
- Dee Wallace - Claire Hall (ep359)
- Deidrie Henry - Tracy Taylor (ep81)
- Del Zamora - Sergio Morales (ep430)
- Délé Ogundiran - Shelby Roberts (ep405)
- Della Saba - Ilene Smyth (ep479)
- Delon de Metz - Thomas Billings (ep350)
- Demetrius Grosse - Lieutenant Merritt Hastings (ep476)
- Demetrius Hodges - Ray Jennings (ep359)
- Dempsey Pappion - Basketball Player (ep3)
- Dendrie Taylor - Janet LaCombe (ep117)
- Denise Crosby - Hattie Taylor (ep424)
- Dennis Apergis - Ivan (ep311)
- Dennis Cockrum - NSA Tech (ep46), Senator (ep485)
- Derek de Lint - Dr. Stephen Brauer (ep10)
- Derek Magyar - Cameron Dean (ep227)
- Derek Ray - David Hernandez (ep214)
- Derek Webster - Major Joe Sacco (ep20), Captain Stengel (ep75)
- Derrex Brady - Navy Corpsman (ep31)
- Derrick McMillon - Lt. Scott Bowen (ep107)
- Desi Dennis-Dylan - Sloane Jackston (ep393)
- Desiree Hall - Jennifer Morrison (ep250)
- Desirée Mee Jung - Dee Walters (ep437)
- Desmond Askew - John James Axiom (ep321)
- Devale Ellis - Dante Brown (ep384)
- Devan Chandler Long - Terry Kemper (ep382)
- DeVaughn Nixon - Scott Gunderson (ep351)
- Devika Parikh - Doctor Saanvi Singh (ep442)
- Devin McGinn - Stewart Dorfman (eps220, 295)
- Devin Sidell - Angela Russell (ep308)
- Diandra Lyle - Alexandria P.D. Karen Stradivarius (eps286, 343)
- Diane Delano - Dee Dee Chesney (ep86)
- Diane Neal - CGIS Agent Abigail Borin
- Diane Robin - Jennifer (ep220)
- Diane Venora - Shada Shakarji (ep144)
- Dilshad Vadsaria - Shakira Zayd (ep136)
- Dimiter D. Marinov - Ghenna Kozlov (ep209)
- Dina Meyer - Holly Snow (eps151, 157)
- Dinora Walcott - Tour Guide (ep325)
- Dionne Gipson - Mallory
- Dohn Norwood - Sherman T. Harper (ep266)
- Dominic Burgess - Leonard (ep470)
- Dominic Rains - Jamal Malik (ep89)
- Dominic Scott Kay - Carson Taylor (ep103)
- Dominique Columbus - Corey Jackson (ep405)
- Don Franklin - Agent Ron Sacks
- Don Lake - Phillip Brooks
- Don McManus - Mark Stafford (ep180)
- Don S. Davis - MTAC Control Officer (ep33)
- Don Stark - Marty Fiero (ep205)
- Don Swayze - Logan Clay (ep26), Peter Walker (ep422)
- Donald Sage Mackay - Commander Kerry Killmartin (ep144)
- Donna Mills - Wanda Prescott (ep470)
- Donnie Jeffcoat - Seaman Tom Jennings (ep27)
- Donny Boaz - Kit Jones (ep254)
- Donzaleigh Abernathy - Ronda Ellis (ep414)
- Dorian Brown - Agent Courtney Krieger (ep98)
- Doris Morgado - Andrea Aldridge (ep216)
- Doug Savant - Father Larry Clannon (ep22), Daniel Kent (ep374)
- Doug Simpson - Roger Dietz (ep282)
- Douglas Olsson - Zaynak Darbenian (ep303)
- Douglas Spain - Cesar Bernal (ep65)
- Drew Powell - Fred Hadley (ep218)
- Drew Rausch - Brandon Singer (ep223)
- Drew Waters - Spencer Hanlon (ep253)
- Dustin Ingram - Ozzie Duncan (ep344)
- Dustin Seavey - Marcus Leonard (ep176), Larry Sykes (ep440)
- Dylan Bruce - Justin Fanniker (ep194)
- Dylan Bruno - Jason Paul Dean (eps161-162)
- Dylan Gelula - Young Marie Markin (ep239)
- Dylan Vox - Lou Jinks (ep381)
- E. Ambriz DeColosio - Ricky McCoy (ep384)
- Eamonn Roche - Hector Stuckey (ep140)
- Ed Kerr - Scott Cutwright (ep223)
- Ed O'Ross - Dao Huang (ep184)
- Eddie Jemison - Terry Spooner (eps67, 352)
- Eddie Shin - Agent Kyle Omagi (ep156)
- Eden Malyn - Lillian Beck (ep419)
- Eden Riegel - Meredith Bilson (ep205)
- Edie McClurg - Mrs. Ruth Potts (ep267)
- Edmund L. Shaff - Norm (ep19)
- Edward "Grapevine" Fordham Jr. - Burly Man a.k.a. "Lump" (ep286)
- Edward Edwards - Congressman (ep278)
- Edwin Hodge - Bodie (ep215)
- Eileen Galindo - Evelyn Gomez (ep336)
- Ektor Rivera - Father (ep410)
- Elayn J. Taylor - Odette Malone
- Elena Lyons - Diane Fontaine (ep3)
- Elena Satine - Adriana Gorgova (ep177)
- Eli Danker - Officer Michael Bashan (ep71)
- Eli Goodman - Adam Gator (ep167)
- Elias Janssen - Adam Vargas (ep454)
- Elijha Mahar - David Marshall (ep304)
- Elisa Donovan - Rebecca Kemp (ep75), Carol (ep466)
- Elisabeth Röhm - May Dawson (ep328)
- Elise Eberle - Arlene Wilkes (ep442)
- Elise Robertson - Alice Miller (ep317)
- Eliza Blair - Life Sequence Rep. Holly (ep480)
- Elizabeth Bennett - Nurse Carla Johnson (ep55)
- Elizabeth Bond - Karen Graham (ep452)
- Elizabeth Connors - Kathy Webb (ep44)
- Elizabeth Frances - Jodie Moreno (ep468)
- Elizabeth Ho - Emma Park (ep208)
- Elizabeth Laidlaw - Rita Brindle (ep384)
- Elizabeth Morehead - Medical Corpsman (ep4)
- Elizabeth Peña - Agent Lina Reyes (ep29)
- Elizabeth Wright Shapiro - Sarah Knox (ep164)
- Ella Thomas - Heidi (ep110)
- Elle Graper - Victoria Palmer (eps427, 481)
- Ellen Geer - Esther Daniels (ep381)
- Ellen Hollman - Tina Larsen (ep276)
- Ellen Ratner - May Stern (ep382)
- Ellen Wroe - Violet L. (ep258)
- Ellie Araiza - Sheila Moeney (ep356)
- Eltony Williams - Cal Groves (ep242)
- Ely Pouget - Julie Watson (ep24)
- Elyse Levesque - Frauke Biedermann (ep440)
- Elyse Mirto - Stefanie Collier (ep285)
- Emilia Ares - Layla Zolotov (ep392)
- Emiliano Díez - Jefe (ep331)
- Emilie de Ravin - Nancy (ep3)
- Emily Alabi - Kelly Ristow (ep312)
- Emily Berry - Gladys (ep416)
- Emily C. Chang - Phyllis Moss (ep212)
- Emily Dunham - Female Soldier (ep233)
- Emily Foxler - Desk Clerk (ep129)
- Emily Rose - Anna Jenlowe (ep358)
- Emily Swallow - Darlene Kelp (ep147)
- Emma Bates - Petty Officer Egan (ep41)
- Emma Bell - Hannah McClain (ep386)
- Enrique Castillo - Ruleo Medilla (ep179)
- Enrique Murciano - Ray Cruz
- Enzo Cilenti - Mamoun Sharif (eps77, 83)
- Eric Allan Kramer - Phillip Ekkerly (ep192)
- Eric Bruskotter - Lester (ep192)
- Eric E. Beck - Scott (ep181)
- Eric James Ramey - Dr. Nolan Cooper (ep171)
- Eric Jungmann - Andy Pringle (ep114)
- Eric Ladin - Petty Officer Thompson (ep7)
- Eric Lange - William Lafferty (ep59)
- Eric Lynch - Gary Shay (ep436)
- Eric Martsolf - Paul Harris (ep120)
- Eric Matheny - Kip Klugman (ep286)
- Eric Nenninger - Corpsman Taylor Henley (ep115)
- Eric Petersen - "Pale" Dale Matteson (ep312)
- Eric Steinberg - Marcos Siazon (ep54)
- Eric Stonestreet - Harvey Ames (ep124)
- Eric Tiede - Neil (ep154)
- Eric Winzenried - Andrew Hopper (ep386)
- Erica Shukrani Luttrell - Allison Asher (ep326)
- Erica Tazel - Coach Curry (ep280)
- Erich Anderson - Agent Jack Canton (ep9)
- Erick Avari - Agent William Gamal (ep8)
- Ericka Kreutz - Joann (ep452)
- Erik Eidem - Corporal Ethan LaCombe (ep117)
- Erik Heger - Sam (ep437)
- Erik Palladino - Staff Sergeant Daniel Cryer (ep142)
- Erik Passoja - Wayne Sweeney
- Erin Allin O'Reilly - Heidi Partridge (eps254, 268)
- Erin Beaux - George Roca (ep203)
- Erin Cahill - Lieutenant Jessica Summers (ep141)
- Erin Cottrell - Marine Lieutenant Emma Reynolds (ep197)
- Erin Cummings - Ellen Wallace (ep374)
- Erin Krakow - Elizabeth Dean (ep330)
- Erin Matthews - Mara Reeves (ep434)
- Erin Pineda - Cynthia (ep433)
- Erin Torpey - Holly Stegman (ep86)
- Erin Wiley - Cpl. Patricia McClain (ep21)
- Erinn Bartlett - Madeline Torrance (ep87)
- Erinn Hayes - Wendy (ep481)
- Erinn Westbrook - Hanna Friedgen (ep291)
- Esther K. Chae - Yoon Dawson (ep60)
- Ethan Rains - Kevin Hussein
- Eugene Kim - Captain Ed Fletcher (ep479)
- Eugene Prokofiev - Dennis Newton (ep427)
- Eugene Shaw - Neil Koh (ep385)
- Eva Tamargo - Adrianna Lopez (ep127)
- Evan Arnold - Gareth Bainbridge (ep314)
- Evan Helmuth - Jeff Beilsman (ep62)
- Eve Gordon - Amanda McCormick (ep188)
- Everette Wallin - Lionel Saxon (ep250)
- Eyal Podell - Namir Eschel (ep71)
- Eyas Younis - Neil Farzad (ep386)
- Fareed Ward - Eric Kagen (ep235)
- Fay Masterson - Gloria Hebner (ep240)
- Fernanda Andrade - Leticia Gomez (ep258)
- Fidel Gomez - Jordan Block (ep79)
- Forry Smith - Duane Gustafson (ep222)
- Fran Bennett - Mary Elaine Smith (eps337, 345)
- Francesco Quinn - Gunnery Sgt. Freddy Alvarez (ep13), Cpl. Luis Romero (ep78)
- Francis Capra - Eddie Castillo (ep147)
- Francis Gonzalez - Rich Reilly (ep407)
- Francis X. McCarthy - Roman Parker
- Franco Barberis - Matt Lecroix (ep340)
- François Chau - Henry Deng (ep370)
- Frank Caeti - Gamer Nerd (ep146)
- Frank Clem - Phil Rutland (ep385)
- Frank Crim - Dave (ep301)
- Frank John Hughes - Enis Watley (ep111)
- Frank Whaley - Jeffrey White (ep33)
- Frankie Jay Allison - Vince Pierman (ep381)
- Frantz Turner - Abe Mathison (ep225)
- Fred Cross - Roland Pulvino (ep238)
- Fred Dryer - Thomas Fletcher (ep359)
- Fred Koehler - Simon Gravy (ep233)
- Frederick Lawrence - Officer at Kids' Event (ep455)
- Fredric Lane - Captain Graves (ep19)
- Freedom Bridgewater - Sergeant Joe (ep419)
- French Stewart - Paul Triff (eps323, 345)
- Gabeen Khan - Rasheed Naasir (ep279)
- Gabriel Burrafato - Reverend Edward Pike (ep468)
- Gabriel Hogan - Pete Grady (ep290)
- Gabriel Olds - Gregg Norvell (ep147)
- Gabriel Sousa - Jared (ep402)
- Gabriel Tigerman - Max Comey (ep245)
- Gabriella Piazza - Molly Mackin (ep467)
- Gabrielle Carteris - Julie Bell (ep343)
- Gabrielle Miller - Andrea Mavrey (ep156)
- Gabrielle Walsh - Michelle Stamos (ep400)
- Gaius Charles - Jason King (ep207)
- Galadriel Stineman - Resident Sierra Krueger (ep428)
- Garette Henson - Young Cpl. Ernie Yost (ep30)
- Garikayi Mutambirwa - Augie Breen (ep76)
- Garrett Hines - Samuel Cross (ep476)
- Garrett M. Brown - James Wallace (ep374)
- Gary Grubbs - Dr. Elmo Poke (ep1)
- Gary Hudson - Detective John Fioscher (ep395)
- Gates McFadden - Mrs. Belmont (ep334)
- Gavin Leatherwood - Dezic's Son (ep321)
- Gena Shaw - Margo Lenkovic (ep323)
- Geno Monteiro - Sergeant Seth Welch (ep117)
- Geoff Meed - Corporal David Stenson (ep13)
- Geoff Pierson - Roy Carver (ep74)
- Geoffrey Blake - Marc Attencio (ep243)
- Geoffrey Lower - CDR Robert Morris (ep51)
- Geoffrey Rivas - Mr. Guzman (ep343)
- Geoffrey Wade - Jack Mandrake (ep224)
- George Gerdes - Field Marshal Rand (ep293)
- George Newbern - Arthur Haskell (ep167)
- George Wyner - Randall Worthington (ep285)
- Georgia Hatzis - Gavriela Adel (ep222)
- Georgia Leva - Lisa (ep402)
- Gerald Downey - Commander Ray Trapp (ep1)
- Gerald McCullouch - FBI Agent (ep1)
- Gerard O'Donnell - LCDR Scott Willis (ep25)
- Gerry Becker - Agent William Baer (ep1)
- Gianni DeCenzo - Owen (ep434)
- Gideon Emery - Rudolph Stalin (ep243)
- Gil McKinney - Crewman (ep6), Logan Donahue (ep453)
- Gilbert Glenn Brown - Carson Granger (ep421)
- Giles Matthey - Daniel Budd
- Gill Gayle - Gas Station Owner (ep278)
- Gillian I. White - Martha Stock (ep443)
- Gina Gallego - Judge Monica Fernandez (ep307)
- Gina Hecht - Christine Newhall (ep342)
- Ginifer King - Lexi Davis (ep422)
- Ginny Weirick - Lynne (ep152)
- Gino Anthony Pesi - Doug Fisher (ep173)
- Gino Montesinos - Viggo Siggurdson (ep338)
- Giovanni Lopes - Mr. Nordstrom (ep350)
- Googy Gress - Bartender (ep196)
- Glen Powell - Evan Westcott (eps216-217)
- Glenn Morshower - Commander Robert Peters (ep7)
- Glenn Taranto - Eddie Kowolski (ep261)
- Gloria Votsis - Dana (ep48)
- Grace Lynn Kung - Doris Edwards (ep422)
- Grace Narducci - Nicole (ep438)
- Graham Beckel - Norman Pittorino (ep228)
- Graham Hamilton - Gabriel Hicks (eps337, 345)
- Graham McTavish - Aleksei (ep100)
- Graham Shiels - Martin Jansen (ep76)
- Grant Harvey - Ian Maddox (ep425)
- Grant Garrison - P.O. Niles Wilson (ep35)
- Grantham Coleman - Richard Doogan (ep292)
- Granville Ames - Hank (ep336)
- Greg Bryan - Donald Burke (ep330)
- Greg Collins - Metro Police Officer (ep321)
- Greg Cromer - Webber Silk (ep350)
- Greg Germann - Jerome Craig
- Greg Perrow - Firefighter Mr. December (ep483)
- Greg Serano - Jalen Washington (ep296)
- Greg Zola - Jeremy Worth (ep11)
- Gregg Binkley - Bob Stivers (ep443)
- Gregg Daniel - Officer Riggs (ep180)
- Gregory Harrison - Captain Roland Ebbakey (ep288)
- Gregory Itzin - Director Charlie (eps1, 3), Spencer Downing (ep394)
- Gregory Scott Cummins - Kobe "Beef" Carver (ep286)
- Gretchen Egolf - Det. Andrea Sparr (ep106)
- Griffin Freeman - P.O. Eric Brown (ep369)
- Guy Wilson - Paul Simmons (ep174)
- Gwendoline Yeo - Joanna Wright (ep348)
- H. Richard Greene - Thomas Victor (ep141)
- Haaz Sleiman - Abdul Wahid (ep89)
- Hal Holbrook - Mickey Stokes (ep72)
- Haley Tju - Alexis (ep378)
- Hank Harris - Denny Johnson (ep251)
- Hannah Barefoot - Haley Chase (ep315)
- Hannah Marshall - Young Maggie (ep261)
- Harrison Leahy - Young Alden Parker (ep429)
- Harry Van Gorkum - Alton Brinkman (ep292)
- Hayley Chase - Kimberly (ep157)
- Hayley Erin - Kasey Powers (ep310)
- Heath Freeman - Benjamin Frank (ep8)
- Heather Mazur - Laura Strike-DePalma (ep286)
- Heather Sossaman - Girlfriend at Diner (ep280)
- Heather Stephens - Lorraine (ep211)
- Hector Hugo - Lewis Dacey (ep283)
- Heidi Dippold - Laura & Linda Seeger (ep14)
- Helen Eigenberg - LCDR Amanda Wilkerson (ep59)
- Helen Sadler - Julie (ep330)
- Henderson Wade - Sam Harper (ep296)
- Henri Esteve - Johnny Diggs (ep327)
- Henri Lubatti - Andre Yorka (ep339)
- Henrietta Meire - Nurse Cooper (ep293)
- Henry Nixon - Mason Finley (ep311)
- Hermie Castillo - Zeke (ep320)
- Herve Clermont - Christian Brodrick (ep297)
- Hilary Salvatore - Petty Officer Jessica Smith (ep42)
- Hilary Ward - Jessica Shaeffer (eps337, 344)
- Hillary Tuck - Justine Booth (ep189)
- Holley Fain - Audrey Daly (ep245)
- Holly Curran - Ruby Holdren (ep423)
- Holmes Osborne - Fred Hanlan (ep36)
- Homie Doroodian - Seth Shakir (ep3)
- Hope Banks - Hihobirdie (ep383)
- Hossein Mardani - Mister Rogers (ep379)
- Hugh Scott - Deputy Billy McCormick (ep197)
- Hugo Armstrong - Eugene Coyle (eps250, 408)
- Ian Alda - Luke Green (epp361)
- Ian Duncan - Michael Deegan (ep366)
- Ian Gregory - Horace Barnes (ep358)
- Ian Reed Kesler - Officer Howard Shelly (ep140)
- Ian Verdun - Francis (ep348)
- Iddo Goldberg - Yaniv Bodnar (ep231)
- Ilia Volok - Burly Man (ep294), Kostya Valkov (ep457)
- Indira G. Wilson - FBI Agent P. Filsk (ep268), CIA Deputy Director Westin (ep460)
- Ion Overman - Jane Thomas (ep199)
- Iqbal Theba - Ramesh Sengupta (ep198)
- Iris Bahr - Beverly Berkshire (ep396)
- Isabella Hofmann - Judge Evelyn Wallace (ep158), Kate Reynolds (ep482)
- Isait De La Fuente - Lucas (ep433)
- Isiah Adams - Chad/Vladmir Izikov (eps401, 403)
- Ismail Bashey - Nabi (ep406)
- Ivan Hernandez - Ray Martin (ep354)
- Ivan Shaw - Victor Cheng (ep235)
- Ivar Brogger - Simon Katz (ep61)
- Ivo Nandi - Manny Varigan (ep206)
- Izzy Diaz - Nelson Ast (ep328)
- J. Claude Deering - Curtis Hubley
- J. Downing - Avis Boyle (ep219)
- J. Eddie Martinez - Roger Davis (ep485)
- J. Robin Miller - Lt. Connors (ep7)
- J. Teddy Garces - Omar Lewis (ep374)
- J.C. MacKenzie - Mitchell Reese (ep91)
- J.D. Walsh - Leonard Finnik (ep357)
- J.J. Hawkins - Taylor Southard (ep374)
- J.P. Hubbell - Nick Mason Jr. (ep164)
- J.R. Cacia - Detective John Carson (ep85)
- Jack Axelrod - Shmeil Pinkhas (eps218, 222)
- Jack Conley - Detective Danny Sportelli
- Jack Fisher - Phineas
- Jack Kehler - Tom Wilson (ep27)
- Jack McGee - Det. Curtis Floyd (ep37), Richard "Rick" Jordan (ep431)
- Jack Mikesell - Navy Lt. Alex Quinn (ep292)
- Jack Stehlin - Commander Harry Wilder (ep53)
- Jackie Geary - Susan Grady
- Jackie Tohn - Celia Ross (ep468)
- Jackson Brundage - Tommy Smith (ep160)
- Jackson Hurst - Zach Nelson (ep167)
- Jaclyn Aimee - Esme (ep444)
- Jacob Buster - Daniel Simmons (ep474)
- Jacob Zachar - Stevie Slater (ep370)
- Jacobi Wynne - Corporal Mark Cohen (ep20)
- Jacory Gums - Agent James Nelson (ep89)
- Jacqueline Hahn - Kathy Tolin (ep165)
- Jacqueline Obradors - Paloma Reynosa
- Jade Carter - Commander Daniel Wise (ep64)
- Jake B. Miller - Jim (ep465)
- Jake Borelli - Dean Campbell (ep297)
- Jake Busey - Whit Dexter (ep346)
- Jake Thomas - Alec Dell (ep214), Derek Bailey (ep461)
- Jaleel White - Martin Thomas (ep199)
- Jaleesa Mendez - Carmen (ep405)
- Jama Williamson - Angelina Jennings (ep301)
- James A. Watson Jr. - Richard Hasley (ep355)
- James Austin Kerr - Phillip (ep343)
- James Black - Crewman (ep7)
- James Carpinello - Smitty Brown (ep172)
- James Connor - Andrew Pike (ep189)
- James Eckhouse - Fred Cabrisio (ep350)
- James Ferris - Gregory Pullman (ep371)
- James Hanlon - James Marsh (ep207)
- James Harvey Ward - Andre Fullerton (ep208)
- James Huang - Petty Officer Wong (ep17)
- James Immekus - Daniel Silcott (ep463)
- James Landry Hébert - Jonesy (ep459)
- James Leo Ryan - Richard Oscar Shea (ep336)
- James MacDonald - Captain Faul (ep2), Admiral Norton Padgett (ep363)
- James Martin Kelly - Mookie Perkins (ep58)
- James Martinez - Lieutenant Eduardo Almeida (ep115)
- James Morrison - Assistant Director Roper (ep11), U.S. Senator John Phillips (ep340)
- James O'Shea - Lt. Sean Ferris (ep100)
- James Parks - Ryan Sikes (ep105)
- James Read - Alan Newhall (ep342)
- James Shanklin - Captain Martin Armstrong (ep141)
- Jamey Sheridan - Admiral John McGee (ep229)
- James Snyder - Dr. Miles Bauer (ep455)
- James Urbaniak - Dr. Rod Daniels (ep127)
- Jamie Bamber - Jake Malloy
- Jamie Elman - Realtor (ep166)
- Jamie Gray Hyder - Heidi Orr (ep294)
- Jamie Harris - Smitty Hastings (ep428)
- Jamie Kaler - Chris Bell (ep343)
- Jamie Luner - Amanda Reed (ep19)
- Jamie Martz - PO1 Marc Hobie (ep61)
- Jamie McShane - Samuel Hayes (ep172)
- Jaime Murray - Agent Julia Foster-Yates (ep137)
- Jaime Ray Newman - Lt. Cmdr. Melanie Burke (eps194-195)
- Jamie Sorrentini - Frankie Mancuso (ep341)
- Jamison Jones - Lt. Gelfand (ep69)
- Jane Carr - Dr. Erica Heller (ep438)
- Janina Gavankar - Angela Lopez (ep125)
- Janora McDuffie - Dr. Lisa Hallorman (ep472)
- Jared Gertner - Roymand Beesbo (ep419)
- Jarrod Bailey - Chris Valley (ep249)
- Jarrod Crawford - Sergeant Brooks (ep55)
- Jarvis George - Dr. Morgan Tolliver (eps69-70), John Wright (ep432)
- Jason Beghe - Blake Martin (ep178)
- Jason Brooks - Major Danny O'Donnell (ep9)
- Jason Downs - Todd Renfro (ep411)
- Jason E. Kelley - Ramsey Dillon (ep285)
- Jason Gerhardt - Jonah Park (ep362)
- Jason Gray-Stanford - Dr. Jay Berman (ep209)
- Jason Kravits - Doctor Gordon Roth (ep428)
- Jason London - Dwight Kasdan (ep157)
- Jason MacDonald - John Watts (ep446)
- Jason Manuel Olazábal - Todd Mercer (ep446)
- Jason Rogel - Leo (ep431)
- Jason Spisak - Aaron Szwed (ep153)
- Jason Wiles - Paul Lemere (eps416-417)
- Jason Woods - Rick Romero (ep383)
- Javi Mulero - Earl Grieve (ep251)
- Javier Grajeda - Dr. Kelly Whelan (ep211)
- Javon Johnson - Eric Freeman (ep406)
- Jay Acovone - Frankie Dean (ep227)
- Jay Ali - Omer Malik (ep276)
- Jay Jablonski - Peter Josephson (ep330)
- Jaymes Butler - Tom Moore (ep346)
- Jayne Brook - Lyndi Crawshaw (ep90)
- JB Tadena - Lonnie Franklin (ep390)
- Jean Paul San Pedro - Dan Dacey (ep295)
- Jean St. James - Marilyn Davis (ep450)
- Jeananne Goossen - Private Joan Matteson
- Jeanette O'Connor - Teri (ep462)
- Jed Rees - Voight Hex (ep276)
- Jeff Austin - Colonel Mike Granger (ep15)
- Jeff Berg - Michael Barrett (ep344)
- Jeff Boehm - Oliver Bale (ep301), Otis Glazebrook (ep458)
- Jeff Branson - Commander Chad Hendricks (ep256)
- Jeff Denton - Jonah Ellis (ep225)
- Jeff Galfer - Victor Hodge (ep247)
- Jeff Griggs - Peter Alden (ep315)
- Jeff Harlan - Reverend Miller (ep242)
- Jeff Hephner - Commander Peter Sheridan (ep149)
- Jeff Pierre - Lew Nolte (ep363)
- Jeff Skowron - Peter Sears (ep184)
- Jeff Williams - Doctor (ep200)
- Jeff Witzke - Attendant (ep112)
- Jeffrey Doornbos - Marshall Tomko (ep161)
- Jeffrey Hutchinson - Mister Dale Wagner (ep244)
- Jeffrey Markle - Hobbyist (ep433)
- Jeffrey Pierce - SSgt Michael McMannis (ep57)
- Jeffrey S.S. Johnson - Commander Nelson Tunney (ep183)
- Jeffrey Wincott - GySgt Leeka (ep43)
- Jenna Gavigan - Lara (ep148)
- Jennifer Baxter - Sienna Michaels (ep402)
- Jennifer Crystal Foley - Constance Mazney (ep206)
- Jennifer Dundas - Lynn Simons (ep42)
- Jennifer Gatti - Negotiator Arkin (ep16)
- Jennifer Hall - Daphne Everett (ep26)
- Jennifer Hetrick - Dr. Donna Dunlap (ep105)
- Jennifer Jalene - Marine Major Diane Vicks (ep466)
- Jennifer Lyons - Zoey (ep17)
- Jennifer Marsala - Jennifer Larson (ep375)
- Jennifer O'Dell - Dina Rankin (ep109)
- Jennifer Rhodes - Claudia (ep433)
- Jennifer Taylor - Wendy Harris (ep281)
- Jennifer Tighe - Sarah Kidwell (ep9)
- Jenny Cooper - Connie Martin (ep218)
- Jenny O'Hara - Alice Brodie (ep114)
- Jenya Lano - Carol Powers (ep20)
- Jeremiah Birkett - Dean Neil Patterson (ep396)
- Jeremy Andorfer-Lopez - Officer Sanchez (ep344)
- Jeremy Batiste - Security Guard Joe (eps388-389)
- Jeremy Garrett - Captain Patrick Barnett (ep26)
- Jeremy Glazer - Douglas Pritchard (ep455)
- Jeremy Guskin - Roland Kesta (ep35)
- Jeremy John Wells - Agent William Baer, Jr. (ep464)
- Jeremy Ratchford - Ramsey Malone (ep291)
- Jeremy Ray Valdez - Alfonso Vega (ep152)
- Jeri Ryan - Rebecca Gibbs (ep269)
- Jerry Kernion - Pastor Alan (ep466)
- Jeryl Prescott - Annie Sullivan (ep361)
- Jesse Bradford - John Bishop (ep314)
- Jesse D. Goins Jeffrey Wilson (ep36)
- Jesse Garcia - PFC Tomas Tamayo (ep128)
- Jesse Head - Lyle Chamber (ep29)
- Jesse Howland - Lenny (ep478)
- Jesse Johnson - Robbie Bishop (ep314)
- Jesse Luken - Corpsman (ep195)
- Jesse Plemons - Jason Geckler (ep59)
- Jesse Posey - Emmanuel Vela (ep425)
- Jessica Cavanagh - Monica Shaw (ep385)
- Jessica Collins - Judy Ford (ep212)
- Jessica Garza - Layna Korkmaz (ep280)
- Jessica Steen - Agent Paula Cassidy
- Jessica Tuck - Gloria Caplinger (ep398)
- Jessica Walter - Judith McKnight (eps289, 320)
- Jessie Graff - Female Soldier (ep233)
- Jillian Bach - Emily Moss (ep157)
- Jim Abele - Colonel Holt Driscoll (ep314)
- Jim Beaver - Captain Tom O'Rourke (ep263)
- Jim Hoffmaster - Administrator (ep213)
- Jim Holmes - Edgar Hayes (ep218)
- Jim Meskimen - Doctor Farrel Emerson (ep355)
- Jim Parrack - Nick Hurley (ep84)
- Jim Pirri - Randy Wiles (ep5)
- Jim Rash - Dr. Joel Sanderson (ep10)
- Jimmy "Jax" Pinchak - Jason (ep179)
- Jimmy Akingbola - Gabriel Moore (ep328)
- Jimmy Palumbo - Stage Manager (ep34)
- Joanna Canton - Sandy Milton (ep199)
- Joanna Leeds - Molly Guinn (ep346)
- JoBeth Williams - Leona Phelps (ep179)
- Jocelyn Ayanna - Mrs. Dawson (ep241)
- Jocko Sims - Michael Thomas (ep205)
- Jodi Bianca Wise - Jenny (ep3)
- Jodi Harris - Catherine Taft (ep298)
- Jody Jaress - Leora (ep450)
- Joe Adler - Matthew Gray (ep172)
- Joe Egender - Robert Graves (ep98)
- Joe Guzaldo - Pete Iger (ep155)
- Joe Holt - Navy Captain Jack Wallace (ep201)
- Joe Lando - Lieutenant Commander Rob Clarke (ep150)
- Joe Martin Thomas - Dion Kelso (ep221)
- Joe Nieves - Justin Kinneman (ep362)
- Joe O'Connor - Pat Gillespie (ep220)
- Joe Pistone - Prison Guard (ep289)
- Joe Reegan - Marcus (ep226)
- Joe Regalbuto - Colonel George Ellis (ep148)
- Joe Sabatino - H.R.T. Leader Horowitz (ep16), Brendan Denridge (ep352)
- Joe Spano - T.C. Fornell
- Joe Tabbanella - Ricky "Little Ricky" Napolitano (ep28)
- Joe Torry - Darryl Wilkins (ep3)
- Joel Brooks - Ronnie Mustard (ep251)
- Joel Damany Steingold - Officer Frank Mandel (ep477)
- Joel Gretsch - Stanley Burley
- Joel Polis - Ronald Ostrowski (ep204)
- Joey Oglesby - Merle Axelrod (ep219)
- Johann Urb - Burt Moore (eps260, 266)
- John Ales - Miles Hogan (ep183)
- John Allen Nelson - Lloyd Manditsky (ep248)
- John Asher - Fred Rinnert (ep97)
- John Beasley - Daryl Hardy (ep82)
- John Berg - General Grant (ep50)
- John Billingsley - Jackson Scott (ep92)
- John Bishop - Army Surplus Store Owner (ep455)
- John Bobek - Sergeant Barnes (ep412)
- John Burke - Erin's ICU Doctor (ep309)
- John Cabrera - Officer Samuel Tate (ep79)
- John Charles Meyer - Ronald Ayers aka Brendan Peters (ep314)
- John Cothran Jr. - Alfred Holbrook (ep206)
- John D'Aquino - Ken Ashmore (ep279)
- John DeMita - Jorge Morales (ep296)
- John Doman - Lt. Cheney (ep35)
- John Edward Lee - Former Sergeant Matthew Gontz (ep155)
- John Eric Bentley - Capt. Arthur Caldwell (ep52)
- John Finn - Charles T. Ellison
- John Gabriel - Luis "Mitch" Mitchell (ep284)
- John Getz - Walter Kane (ep152), Captain Thomas Butler (ep472)
- John Hartmann - Richard Sullivan (ep368)
- John Henry Canavan - Jake Munro (ep123)
- John Hensley - Phil Hanover
- John Kapelos - Victor Castor (ep308)
- John Kassir - Perry Swan (ep275)
- John L. Adams - Seth Patterson (ep62)
- John Lacy - Ranger Kett (ep38)
- John Laughlin - Alan Redding (ep335)
- John Lavelle - Derrick Archer (ep181)
- John Littlefield - Stovic's Aide (ep6)
- John Livingston - Will Pritchard (ep250)
- John M. Jackson - A.J. Chegwidden (ep234)
- John Marshall Jones - Detective Hanley (ep19)
- John O'Brien - Bruce (ep150)
- John Pleshette - Tom Crawley (ep57)
- John Posey - Lance Simmons (ep174)
- John Prosky - Carl Dalton (ep204)
- John Rosenfeld - Agent Charles (eps15, 28)
- John Rubinstein - Director Bob (ep9)
- John Siciliano - PFC Nathan Stone (ep104)
- John Sloan - Luke Pischedda (ep251)
- John T. Woods - Jason Crosby (ep166)
- John Thaddeus - Lane Harrison/Lane Danielson/Billy Collins (ep33)
- John Vickery - Inspector Hugh Benson (ep99)
- John Wesley - Chaplain Samuel Kemp (ep364)
- John Wynn - Ted (ep158)
- Johnny Jay Lee - Petty Officer Sheehan (ep451)
- Johnny Ray Gill - Royce Layton (ep327)
- Johnny Rey Diaz - Victor Medina (ep313)
- Johnny Sneed - Agent Andrew Kramer (ep20)
- Johnny Wactor - Ross Johnson (ep366)
- Johnny Williams - Carmen Lorenzo (ep390)
- Joi Symone - Nina Miller (ep431)
- Jon Beavers - Sam Butler (ep293)
- Jon Curry - Deputy Tyler Barrett (ep82)
- Jon Huertas - Sgt. Jack Kale (ep118)
- Jon Lindstrom - Perry Davidson (ep240)
- Jon Sklaroff - Jonathan Redding (ep41)
- Jon Wellner - Simon "Urkel" Frankel (ep43)
- Jona Xiao - Dr. Mei Li (ep462)
- Jonah Wharton - Robert Flynn (ep351)
- Jonathan Adams - Thomas Zuri (ep102)
- Jonathan Bray - Senator Judd Larmont (ep471)
- Jonathan Chase - Commander Marshall May (ep390)
- Jonathan Del Arco - Ned Senders (ep312)
- Jonathan Fraser - Officer Jack Lyon (ep66)
- Jonathan Goldstein - Glenn Block (ep174)
- Jonathan Kells Phillips - Senator Shawn Kelly (ep302)
- Jonathan Keltz - Jackson Bannon (ep466)
- Jonathan Kerrigan - Rex Carhartt (ep159)
- Jonathan Kite - Chet Goodman (ep340)
- Jonathan Kowalsky - Nate Holt (ep438)
- Jonathan LaPaglia - Agent Brent Langer (eps105, 114)
- Jonathan Mangum - Agent Daniel T. Keating (ep114)
- Jonathan Medina - Ted Morgan (ep319)
- Jonathan Ohye - Nigel Yang (ep450)
- Jonathan Patrick Moore - Kip Logan (ep237)
- Jonathan Redford - Corpsman Timothy Morgan (ep42)
- Jonathan Runyon - Marine PFC Oscar Cunningham (ep195)
- Jonathan T. Floyd - Petty Officer Second Class Gil Niles (ep6)
- Jonathan Woodward - Andy Nelson (ep78)
- JoNell Kennedy - Lisa Cleveland (ep226)
- Jonno Roberts - Scott Pell (ep85)
- Jonny Rios - Victor Wilkes (ep442)
- Jordan Garrett - Stephen Rose (ep200)
- Jorge-Luis Pallo - Lt. Matthew Sanchez (ep107)
- Jose Pablo Cantillo - Mark Sisco (ep429)
- José Zúñiga - Dr. Adrian De La Casa (ep104)
- Joseph C. Phillips - Philip Conway (ep313)
- Joseph Castanon - Zach Tanner (ep53)
- Joseph Fuhr - David Holland (ep225)
- Joseph Julian Soria - Victor "Popeye" Carmado (ep128)
- Joseph Kamal - Captain Kassib Yosef (ep142)
- Joseph Lee Anderson - Bernard "Barney" Ernest Williams (ep382)
- Joseph Lyle Taylor - Detective Edward Olson (ep351)
- Joseph Melendez - Reymundo Diaz (ep432)
- Joseph Williamson - George Capetanos (ep161)
- Josh Coxx - Paul Smith (ep319)
- Josh Daugherty - Devon Kane (ep32)
- Josh Gordon Emerson - Aaron Connolly (ep241)
- Josh Holloway - Sheriff (ep12)
- Josh Randall - Ryan Barnes (ep264)
- Josh Stamberg - Major Ike Varnai (ep109)
- Joshua Brockington - Felix Cross (ep420)
- Joshua LeBar - Adam Cooper (ep308)
- Joshua Nazaroff - Zero (ep442)
- Joshua Sawtell - Frankie Boulos (ep273)
- Josie Davis - Marta (ep23)
- Josie Loren - Jane (ep181)
- Jozef Fahey - Jared Turner (ep341)
- JR Bourne - Detective Marshall Collins (ep103)
- JT Neal - Archie (ep362)
- Juan Alfonso - Ramon Moncada (ep336)
- Juan Carlos Cantu - Leo Silva (ep307)
- Juan Javier Cardenas - Carlos "El Viento" Savina (ep465)
- Judd Trichter - Hunter Huxley (ep43)
- Jude Ciccolella - Secretary of the Navy Phillip Davenport
- Judi Shekoni - Natalie Vance (ep57)
- Judith Moreland - Carrie Lewis (ep361)
- Judy Kain - Gladys Stone (ep332)
- Judyann Elder - Marny Mathers (ep72)
- Julia Cho - Ginger Uwanawich (ep254)
- Julia Rose - Female Bartender (ep27)
- Julia Whelan - Greta Fensternacht (ep321)
- Julian Acosta - Matt Burns (ep141)
- Julian Bailey - Petty Officer Ronald Zuger (ep4)
- Julianne Collins - Dorothy Quinlan (ep451)
- Julie Ann Emery - Erin Pace (ep246)
- Julie Benz - Denise Johnson (ep22)
- Julie Carmen - Mrs. Medina (Victor's Mother; ep313)
- Julie Claire - Lois Heller (ep134)
- Julie Gonzalo - Sarah Schaefer (ep2)
- Julie McNiven - Kim Taylor (ep215)
- Julie Pearl - Cindy Anderson (ep420)
- Juliette Angelo - Emily Fornell
- Juliette Goglia - Evelyn Shaw/Viktoria Valkov
- June Carryl - Julia Marino (ep344)
- June Schreiner - Amy Barrett (ep315)
- Justin Bruening - Lieutenant Bryce Prescott (ep470)
- Justin Huen - Security Guard Lenny (ep425)
- Justin Prentice - Michael Fox (ep255)
- Justin Welborn - John Zaprowski (ep360)
- K Callan - Grace Mullen (ep179), Bertha Jones-Delacroix (ep394)
- Kai Lennox - Adam Parker (ep123)
- Kaipo Schwab - Lucas McCullers (ep447)
- Kaitlyn Black - Lt. Melissa Newhall (ep342)
- Kaj-Erik Eriksen - Frank Smith (ep43)
- Kal Weber - Theo Gaston (ep169)
- Kaley Ronayne - Rhonda C. (ep336)
- Kamal Angelo Bolden - Clarence Wyatt (ep347)
- Karan Oberoi - Benham Parsa (eps246, 248)
- Kareem Grimes - Bushmeat Smuggler (ep328)
- Kari Coleman - Maggie Scott (ep128)
- Karina Logue - Mrs. Johnson (ep208)
- Karina Lombard - Monique Lisson (ep206)
- Karis Campbell - Lt. Elaine Taylor (ep103)
- Karissa Vacker - Louisa Banner (ep383)
- Karl Makinen - Staff Sergeant James Dawson (ep60)
- Karl T. Wright - John Hicks (ep266)
- Karole Foreman - Lydia Miles (ep364)
- Karri Turner - Micki Kaydar (eps389, 412)
- Kasey Mahaffy - Dr. Patton Hartgrave (ep365)
- Kash Abdulmalik - Carter Landegraff (ep437)
- Kate Beahan - Colette Girard (eps281-282)
- Kate Boyer - Cindy Carter (ep432)
- Kate Cobb - Reagan Reilly (ep327)
- Kate Hamilton - Faith Tolliver
- Kate Hodge - Agent Jane Melankovic (ep25)
- Kate Lacey - Ensign Christina Solomon (ep115)
- Kate McNeil - Commander Margaret Green (ep14)
- Kate Norby - Diane Russio (ep86)
- Kate Orsini - Isabel Monet (ep358)
- Kate Rene Gleason - Jane (ep389)
- Kate Vernon - Caroline Morrow (ep303)
- Kathe Mazur - Dawn Tyson (ep277)
- Katherine Bailess - Madison (ep79)
- Katherine Cortez - Thelma McKeever (ep415)
- Katherine Cunningham - Laura Ellison (ep324)
- Katherine Disque - Mary Barrett (ep315)
- Kathleen Gati - Svetlana Chernitskaya (eps112-113)
- Kathleen York - Stephanie Flynn (ep97)
- Kathy Searle - Rhonda Rosen (ep481)
- Katia Winter - Ava Baransky (ep203)
- Katie Amanda Keane - Laurie Niles (ep76)
- Katie Leclerc - Diana Murphy (ep391)
- Katie Lowes - Bryn Landers (ep92)
- Katie Roberts - Joni Ryan (ep283)
- Katie Von Till - Pamela Juventas (ep365)
- Katy Boyer - Lieutenant Egan (ep11)
- Kay Lenz - Connie Quinn Wheeler (ep124)
- KayKay Blaisdell - Gen Z Girl (ep441)
- Kayla Blake - Nurse Allegra (ep454)
- Kayla Mae Maloney - Emily Kingston (ep117)
- Keenan Henson - Henry Coldwell (ep236)
- Keir O'Donnell - Ramsey Boone (ep227)
- Keith Carradine - Mannheim Gold (ep251)
- Keith Diamond - Sergeant Gregory Nutt (ep2)
- Keith Robinson - Henry Caldwell (ep265)
- Keith Sellon-Wright - Admiral Xavier Meade (ep271)
- Kelli Barrett - Ruby Lemere (ep228)
- Kelli Williams - Maureen Cabot (eps255, 288)
- Kelly Blatz - Kyle Friedgen (ep291)
- Kelly E. Smith - Emily Miller (ep225)
- Kelly Frye - Lieutenant Kara Gifford (ep288)
- Kelly Hu - Lee Wuan Kai (ep145)
- Kelly Overton - Detective Megan Hanley (ep141)
- Kelly Sry - Dr. Scott Long (ep434)
- Kelly Stables - Astrid Fellowes (ep420)
- Kelsey Oldershaw - Lt. Emma Ingham (ep45)
- Kelvin Yu - Sebastian Kim (ep241)
- Ken Garito - Leslie Walker (ep477)
- Ken Lerner - Albert Hencheck (ep67)
- Kenajuan Bentley - Captain Oliver Royce (ep424)
- Kenneth Mitchell - Nathan Curtis (ep264)
- Kenneth Tigar - Dr. Diggar Aldridge (ep10)
- Kenny Leu - Kenny Young (ep283)
- Kent Faulcon - Cdr. Reynolds (ep27)
- Keon Alexander - Nazy Rickman (ep355)
- Keone Young - Lee Sung (ep60)
- Kerr Smith - Lieutenant Jonas Cobb (ep185)
- Kerrie Keane - Maggie Reed (ep159)
- Keston John - Mark Dominquez (ep296)
- Kevin Alejandro - Jamie Jones (ep81)
- Kevin Ashworth - Richard Lane (ep341)
- Kevin Cahoon - Joe Don Wynn (ep177)
- Kevin Chapman - Billy Doyle (ep429)
- Kevin Christy - Clarence Tobett (ep201)
- Kevin Fonteyne - Boyfriend at Diner (ep280)
- Kevin Kilner - Patrick Norian (ep385)
- Kevin McClatchy - Lieutenant David Cameron (ep15)
- Kevin McCorkle - Colonel Dan McClafferty (ep8)
- Kevin Pollak - Albert Hathaway (ep344)
- Kevin Quigley - William the Truthteller (ep42)
- Kevin Rankin - Dennis Moran (ep106)
- Kevin Rock - DoD Liaison Klein (ep197)
- Kevin Sizemore - Sgt. William Moore (ep38), Stuart Greco (ep456)
- Kevin Symons - Federal Air Marshall Arthur Neeley (ep151)
- Kevin Will - Will Sutton (ep141)
- Ki Hong Lee - Chris Hoffman (ep249)
- Kieran Mulroney - Lieutenant Reynolds (ep4)
- Kiko Ellsworth - Willie Taylor (ep39)
- Kim Johnston Ulrich - Nancy Hargrove (ep176)
- Kim Matula - Agent Rose (ep458)
- Kim Oja - Karen Wilkerson (ep35)
- Kim Rhodes - Sandra Jenkins (ep258)
- Kim Robillard - Dwayne Parker (ep293)
- Kim Shaw - Courtney Reed (ep260)
- Kimberlee Peterson - Lt. Keira Napleton (ep66)
- Kinsey McLean - Sean Evans (ep344)
- Kira Sternbach - Mary Messier (ep314)
- Kirk B.R. Woller - Lieutenant Commander Wayne Julius (ep14)
- Kirk Baltz - Bob Sweeney (ep346)
- Kirk Fox - Rod Carmale (ep360)
- Kirsten Nelson - Beth Banks (ep202)
- Kirsten Prout - Lydia Wade (ep218)
- Klea Scott - Janet Lewis (ep267)
- Konstantin Lavysh - Yuri (ep259)
- Kovar McClure - Duke Turner (ep247)
- Krishna Smitha - Dr. Carrie Moran (ep465)
- Kristen Ariza - Loretta Tennison (ep166)
- Kristen Bush - Sergeant Alice Hardy (ep119)
- Kristina Klebe - Cheryl Dombrowski (ep320)
- Kristopher Higgins - Dean (ep148)
- Kurt Caceres - SSgt Vincente Medina (ep128)
- Kurt Yaeger - Freddie Linn (ep249)
- Kyle Davis - John "Diesel" Stevens (ep218)
- Kyle Eastman - Stafford Meeks (ep437)
- Kyle Searles - Aaron (ep125)
- Kym Hoy - Cheryl Young (ep126)
- Kym Jackson - Phoebe Spitz (ep328)
- La Monde Byrd - Rand Kraus (ep309)
- Lachlan Buchanan - James Muldoon (ep299)
- LaMonica Garrett - Marine Captain Craig Quincy (eps194-195)
- Lamont Thompson - Lt. Sommers (ep41)
- Lane Garrison - Holt Perkins (ep276)
- Lanny Joon - Edward Jin Tao (ep317)
- Larry Bagby - Craig Wilson (ep212)
- Larry Bates - Malik Madson (ep375)
- Larry Brandenburg - Hubble (ep156)
- Larry Cedar - Jason Kaplan (ep41)
- Larry Clark - Director (ep50)
- Larry Herron - Jason Kelly (ep165)
- Larry Miller - Ed Slater (eps197, 370)
- Larry Poindexter - Dr. Berman (ep378)
- Larry Sullivan - Flight Surgeon (ep6)
- Laura Regan - Amber Davis (ep338)
- Laura San Giacomo - Dr. Grace Confalone
- Laura Seay - Anna Dillon (ep266)
- Lauran September - Emma Thatcher (ep355)
- Lauren Bowles - Mary Wiles (ep5), Nance Freeman (ep430)
- Lauren Hodges - Amanda Baylor (ep204)
- Lauren McKnight - Miss Sharpe aka Assassin (ep484)
- Lauren Stamile - Michelle Lane (ep333)
- Lauren Sweetser - Macy Grant (ep365)
- Lawrence Adimora - Jacob Pierway (ep205)
- Lawrence Kao - Pete Cannizaro (ep407)
- Lawrence Monoson - Adam O'Neill (ep49)
- Lawrence Pressman - Director Mark (ep1), Dr. Russell Pike (ep81)
- Laz Alonso - Staff Sgt. Steven Washington (ep21)
- Leann Hunley - Young Joann Fielding (ep154)
- Lee Garlington - Mary Hanlan (ep36)
- Lee Reherman - Sergeant Tuers (ep2)
- Leif Gantvoort - Max Devendorf (ep397)
- Leith M. Burke - Jared Bratton (ep173)
- Lela Loren - Isabella Cortez (ep144)
- Lena Georgas - Dr. Dina Bashir (ep236)
- Lennie Loftin - Frederick Cantor (ep272)
- Lenny Jacobson - Security Guard (ep192)
- Lenny Schmidt - Eddie Banasek (ep120)
- Leon Russom - Mr. Donaldson (ep18)
- Leonard Earl Howze - Security Guard Wilson (ep179)
- Leonard Kelly-Young - George Keogh (ep347)
- Leonard Roberts - Petty Officer Howard Carter (ep17)
- Leonard Robinson - Metro Police Officer Jackson (eps196, 295)
- Leonard Wu - Midshipman Alex Delapena (ep145)
- Lesley Fera - Dr. Wendy Lythcott (ep474)
- Leslie-Anne Huff - Hillary Lange (ep170)
- Leslie Hope - Sarah Porter
- Lev Gorn - Anton Pavlenko
- Lexi Ainsworth - Holly Lyngos (ep455)
- Lilan Bowden - Robin Knight
- Lilli Birdsell - Jill Reynolds (ep97)
- Lily Gibson - Clarissa (ep375)
- Lily Rains - Nora Williams (ep151)
- Lily Rose Silver - Elena (ep349)
- Linara Washington - Lara Morgan (eps228, 260)
- Linc Hand - Damien Hunter (ep251)
- Lincoln A. Castellanos - Exterminator Marty (ep466)
- Linda Gehringer - Michele Stark (ep274)
- Linda Park - Lieutenant Nora Patel (ep214)
- Lindsay Price - Lt. Pam Kim (eps32, 55)
- Lindsay Pulsipher - Tina Ellis (ep148)
- Lindsay Wagner - Barbara Bishop (ep292)
- Lindsey Kraft - Sarah Goode (eps270, 281)
- Lindsey McKeon - Taylor Matthews (ep291)
- Lindy Booth - Amanda Barrow (ep145)
- Link Ruiz - Hugo Grava (ep386)
- Linsey Godfrey - Stephanie Phillips (ep64)
- Lisa Banes - Ambassador Olivia Edmunds (ep277)
- Lisa Kaminir - Dr. Romero (ep392)
- Lisa LoCicero - Elena Devol (ep385)
- Lisa Rieffel - Brenda Carter (ep125)
- Lisa Sheridan - Krista Dalton (ep147)
- Lisandra Tena - Paramedic Maria Santiago (ep424)
- Lise Simms - Nancy Reynolds (ep356)
- Livia Treviño - Lupe (ep151)
- Liz Holtan - Holly Farrell (ep255)
- Liza Lapira - Agent Michelle Lee
- Lizze Broadway - Mandy (ep343)
- Lloyd Kino - Hitoshi Yoshida (ep30)
- Lobo Sebastian - Renaldo Aranda/Engineer (ep262)
- Lochlyn Munro - Kevin Holt (ep41)
- Logan Pepper - Dylan (ep395)
- Lolita Davidovich - Catherine Tavier (ep238)
- Lombardo Boyar - Felix Quintero (ep201)
- Long Nguyen - Ky Van Tu (ep265)
- Loren Lazerine - George (ep19)
- Loren Lester - Dr. Edgar Cromwell (ep209)
- Lorena Jorge - Drea (ep405)
- Lorenzo Callender - Gene Abbott (ep165)
- Lorna Scott - Sally Parker (ep34)
- Lorraine Toussaint - Donna Wolfson (ep177)
- Lou Beatty Jr. - Issac Curtis (ep131)
- Lou DiMaggio - Nestor Carbone (ep310)
- Lou Ferrigno Jr. - Dave Lancellotti (ep266)
- Lou George - Building Manager (ep237)
- Louis Ferreira - Metro Detective Nick Burris (ep199), Harlan Atwood (ep460)
- Louis Herthum - Ernest McCormick (ep188)
- Louis Mustillo - Emilio "Freckles" Zucado (ep400)
- Louise Barnes - Sarah
- Louise Griffiths - Mary Gardocki (ep207)
- Louise Lombard - Lara Macy (eps135-136)
- Lourdes Benedicto - Rebecca Chidis (ep230)
- Lucas Kerr - Holden Baxter (ep324)
- Lucy Butler - Roda Robinson (ep244)
- Lucy Davis - Dr. Janice Brown (ep287)
- Lucy Walsh - Alice (ep269)
- Luis Jose Lopez - Javier Martinez (ep349)
- Luke Edwards - Tommy "Peaches" Mulligan (ep366)
- Luke Jones - Manny Barnes (ep361)
- Lyduan Gonzalez - Fernando Vega (ep469)
- Lyn Alicia Henderson - Nurse (ep232)
- Lyndon Smith - Lieutenant Rebecca Weeks (ep390)
- Lynsey Bartilson - Ruby Rae (ep82)
- Mac Brandt - Jake Spoke (ep239)
- Mackenzie Astin - Michael Rose (ep200)
- Madalyn Horcher - Jennifer Baxter (ep310)
- Madeline Bertani - Regina Jones (ep329)
- Madeline Blake - Harper Logan (ep390)
- Madeline Carroll - Angela Kelp (ep147)
- Madisen Beaty - Kristin Haskell (eep167)
- Madison McLaughlin - Rosie Martin (ep218)
- Madison Mason - Colonel Bushnell (ep40)
- Mailon Rivera - Commander Bitterman (ep329)
- Maite Schwartz - Inspector Isabel Cheblis (ep257)
- Mandy June Turpin - Karen Bright (ep80)
- Mandy Levin - Congresswoman Shirley Ives (ep463)
- Manoel Felciano - Jim Brisco (ep254)
- Manuel Uriza - Nicolas Rebollo (ep331)
- Marc Anthony Samuel - James Hall (eps216-217)
- Marc Jablon - Lieutenant Jonah Kaplan (ep115)
- Marc Vann - Mark Sadowski (ep86)
- Marcelo Tubert - Nazar Boulos (ep273)
- Marci Simon - Mrs. Simek (ep280)
- Marco Sanchez - Alejandro Rivera
- Marcos Favela - Carlos Garcia (ep408)
- Marcuis W. Harris - Chris Jenkins (ep104)
- Marcus Brown - Petty Officer Dominic Dimarco (ep139)
- Marcus Chait - Cole Erickson (ep116)
- Marcus Giamatti - Victor Tillman (ep149)
- Marcus Henderson - Stu (ep287)
- Marcy Harriell - Nurse Carly Marcano (eps93-94)
- Marem Hassler - Lena Paulsen (eps440, 469)
- Margaret Easley - Sara Nelson (ep96)
- Margarita Kallas - Natasha Dunchenko (ep257)
- Margo Harshman - Delilah Fielding
- Marguerite MacIntyre - Commander Lauren Tyler (ep11)
- Mariana Da Silva - Dakota James (ep312)
- Mariana Klaveno - Margot Demint (ep401)
- Marianne Muellerleile - Nurse Hannah Dunstan (ep134)
- Marieh Delfino - Judy Moore (ep38)
- Mariela Garriga - Maria Diaz (ep432)
- Mariette Hartley - Hanna Lowell (ep45)
- Marika Engelhardt - Elisabeth Wenders (ep440)
- Marilee Talkington - Annie Barth (ep350)
- Marina Sirtis - Orli Elbaz (eps231, 306)
- Marisol Nichols - Zoe Keates
- Mark Adair-Rios - Ignacio "Iggy" Mejia (ep40)
- Mark Allan Stewart - Stefano Delmar (ep118)
- Mark Ankeny - Barry Kester (ep150)
- Mark Atteberry - Medgar Nash (ep441)
- Mark Berry - Joe (ep336)
- Mark Bloom - Dr. Marley (ep453)
- Mark Damon Espinoza - Sheriff Deke Lester (ep34)
- Mark Derwin - Marine Major Bradley Raines (ep82)
- Mark Harelik - Ron Levinson (ep66)
- Mark Holton - Sergeant Linn (ep3)
- Mark Hutter - U.S. Ambassador James Ealy (ep199)
- Mark L. Taylor - Dr. Harvey Kimball (ep453)
- Mark Matkevich - Jake (ep99)
- Mark Rolston - George Westcott (eps216-217)
- Mark Sivertsen - Commander Rivers (ep4)
- Mark Totty - Max Bourdais (ep101)
- Markice Moore - Supervisor of Gator Bash (ep482)
- Markus Flanagan - Commander Mike Taffet (ep132)
- Marla Gibbs - Rosie Brown (ep360)
- Marnee Carpenter - Alma Bolston (ep466)
- Marshall Allman - Donnie (ep341)
- Martha Hackett - Celia Roberts (ep125)
- Martin Copping - Benny (ep384)
- Matthew Lawrence - Danny Butler (ep472)
- Marty Papazian - Sgt. Jake Roberts (ep52)
- Mary Anne McGarry - Fern Robbins (ep315)
- Mary-Bonner Baker - Melissa Fields (ep433)
- Mary Chieffo - Sierra Thompson (ep437)
- Mary Faber - Lori Wilson (ep377)
- Mary Gallagher - Betty Baxter (ep310)
- Mary Page Keller - Lt. Commander Michaela "Micki" Shields (ep29)
- Mary Pat Gleason - Nurse Wells (ep28)
- Mary Stuart Masterson - Congresswoman Jenna Flemming
- Mateus Ward - Austin (ep221)
- Mathew St. Patrick - Quinton Shard (ep227)
- Matt Angel - Peter Samkharadze (ep426)
- Matt Battaglia - Petty Officer Porcaro (ep22)
- Matt Biedel - Kevin Daly (ep245)
- Matt Burns - Gareth Godfrey (ep261)
- Matt Bushell - Lt. Rob King (ep44)
- Matt Caplan - Paul 'McCartney' Patterson (ep217)
- Matt Carmody - Chaplain Brett Evans (ep25)
- Matt Champagne - Doctor at VA Hospital (ep301)
- Matt Corboy - Petty Officer Lance Tolliver (ep107)
- Matt Crabtree - Curt Carver (ep129)
- Matt Craven - Clayton Jarvis
- Matt DeCaro - Sheriff Daryl Bello (ep43)
- Matt Jones - Ned Dorneget
- Matt Knudsen - Jensen Reed (ep332)
- Matt Lowe - Joey Barrett (ep344)
- Matt Malloy - Dr. George Petri (ep55)
- Matt McCoy - Senator Thomas Bransfield (ep302)
- Matt McTighe - Allan Hayes (ep109)
- Matt Nolan - Paul Spencer (ep364)
- Matt Orduna - Harvey (ep301)
- Matt Winston - Rick Carvell (ep75)
- Matthew Alan - Paul Booth (ep189)
- Matthew Arkin - Dr. Graham Novak (ep256)
- Matthew Ashford - Rick Martel (ep396)
- Matthew Bellows - Reginald Barkley (ep371)
- Matthew Brenher - Mattias Groller (ep296)
- Matthew Crowley - Doug (ep330)
- Matthew Del Negro - Agent Balboa (ep16)
- Matthew Downs - Bill Norian (ep466)
- Matthew Florida - Kyle Severin (ep175)
- Matthew Furfaro - Young Jonny Zucado (ep400)
- Matthew Glave - John McGee (ep368)
- Matthew Godbey - Agent Brian Colfax (ep458)
- Matthew Hancock - Geoffrey Sullivan (ep423)
- Matthew Holmes - Griffin Dorn (ep309)
- Matthew John Armstrong - Michael Hayes (ep289)
- Matthew Jones - Rick Odwalla (ep350)
- Matthew Marsden - Lt. Roy Sanders (ep86)
- Matthew Rauch - John (ep23)
- Matthew Sato - Zack Taylor (ep433)
- Matthew Willig - Simon Cade
- Matthew Yang King - Min Ho Kwon (ep176), Michael Chang (ep467)
- Matty Cardarople - Clerk (ep349)
- Maureen Sebastian - Elaine Dodd (ep300)
- Mauricio Mendoza - Rico Caldas (ep64)
- Max Adler - Luke Stana (ep408)
- Max Deacon - Ben Ramsey (ep367)
- Max E. Williams - Louis Shekian (ep298)
- Max Gail - Sam Loomis (ep119)
- Maxwell Caulfield - Dr. Madison Fielding (ep232)
- Maya Boudreau - Lola Morales (ep430)
- Maya Stojan - Meredith Ragen (ep296)
- McKinley Freeman - Sergeant Ross Barnes (ep143)
- Medalion Rahimi - Lila (ep257)
- Meeghan Holaway - Dr. Hale (ep233)
- Meg Steedle - Amanda Kendall (ep257)
- Megan Gallagher - Jennifer Leo
- Megan Stier - Sarah (ep334)
- Megan Ward - Laura Rowans (ep32)
- Melina Kanakaredes - Eleni Kostakis (ep477)
- Melinda McGraw - Diane Gibbs Fornell Sterling
- Melinda Page Hamilton - Vanessa Tillman (ep149)
- Melissa Farman - Alexis Ross/Jinn (ep181)
- Melissa Ponzio - Drew Turner (ep190)
- Melody Butiu - Patricia Richert (ep223)
- Melora Hardin - Erin Toner (ep5)
- Melora Walters - Susan Elizabeth Lowe (ep301)
- Menik Gooneratne - Diya Khatri (ep441)
- Mercedes Colón - Petty Officer Second Class Gina (ep11)
- Mercedes Masöhn - Officer Heather Kincaid (ep139)
- Mercedes Renard - Elizabeth Adler (ep118)
- Mercedes Ruehl - Marie Quinn (ep326)
- Meredith Eaton - Carol Wilson
- Meredith Monroe - April Ferris (ep168)
- Merik Tadros - Michael Rivkin (eps135-138)
- Merle Dandridge - Agent Marcy Carruthers (ep3)
- Merrick McCartha - Dr. Eugene Pierce (ep373)
- Merritt Wever - Wendy Smith (ep51)
- Mia Barron - Doctor Katrina Griffin (eps305-306)
- Michael A. Shepperd - Louis (ep460)
- Michael Adler - Captain Burger (ep1)
- Michael B. Silver - Nicholas Sandlock (ep190)
- Michael Beach - Metro Detective Robert Flowers (ep199)
- Michael Bellisario - Charles "Chip" Sterling
- Michael Benyaer - Osman Zoranj (ep195)
- Michael Broderick - James Shelty (ep320)
- Michael Canavan - Thomas Garscott (ep315)
- Michael Chieffo - Randy Devereaux (ep411)
- Michael Cram - Earl Kitt (ep298)
- Michael Dempsey - Coach Morgan (ep31)
- Michael Des Barres - Del Finney (ep213)
- Michael Drayer - Carlo Hackett (ep326)
- Michael Dunn - Lenny Dunstrop (ep381)
- Michael Duvert - Walter Daniels (ep167)
- Michael E. Knight - Leland Spears (ep274)
- Michael Edwin - TSA Officer Perkins (ep203)
- Michael Ensign - Doctor Ishmael Havana (ep262)
- Michael Esparza - LCpl Jose Silva (ep65)
- Michael Garza - Reymundo De Leon (eps457-458)
- Michael Gaston - Major Dougherty (ep13)
- Michael Gilden - Marty Pearson (eps78, 80)
- Michael Goldsmith - Ben Mitchell (ep406)
- Michael Grant Terry - Ted Lemere (ep228)
- Michael Graziadei - Chuck Mannis (ep21)
- Michael Hagerty - Andrew Hoffman (ep110)
- Michael Holden - Dr. Wayne Dobson (ep62)
- Michael Hyatt - Judy Williams (ep125)
- Michael Kostroff - Felix Lassiter (ep442)
- Michael Lowry - Lt. Cmdr. Akron (ep7)
- Michael Malota - Billy Sullivan (ep178)
- Michael Marc Friedman - Joseph Wilkes (ep279)
- Michael Masini - Axel McKenzie III (ep340)
- Michael McGrady - Walter Dunn (ep223)
- Michael McMillian - David Kemmons (ep310)
- Michael McShane - Dr. Matthew Heller (ep438)
- Michael Monks - Matt Lane (ep167), Edgar (ep467)
- Michael Nouri - Eli David
- Michael O'Neill - Riley McCallister
- Michael Patrick McGill - Joe Kelly (ep93)
- Michael Patrick Thornton - Jeremy Brighton (ep449)
- Michael Peter Bolus - Max Talia (ep135)
- Michael Petrone - Camping Guide Carl (ep439)
- Michael Reilly Burke - Frank Connell (ep53)
- Michael Rose - Major Gordon Holcomb (ep155)
- Michael Shamus Wiles - Jimmy (ep8)
- Michael Varde - Jesse Winston (ep479)
- Michael Weaver - Thomas McAllister (ep34)
- Michael Welch - Kody Meyers (ep64)
- Michael Weston - Herman Maxwell (ep436)
- Michael Whaley - Detective J.D. Morris (ep85)
- Michael Wiseman - Chet Tyber (ep228)
- Michele Boyd - Emily Ross (ep371)
- Michelle Anne Johnson - Emma Fisher (ep254)
- Michelle Clunie - Meredith Dunn (ep223)
- Michelle Harrison - Ranger Bobbi Hendricks (ep63)
- Michelle Krusiec - Agent Maya (ep54)
- Michelle Lukes - Gemma Wood (ep484)
- Michelle Pierce - Breena Slater
- Mido Hamada - Prince Abdalla Ibn Alwaan (ep150)
- Miguel Pérez - Federal Marshal Van Driver (ep33)
- Mik Scriba - Mr. Walters (ep7)
- Mike Beaver - Larry West (ep73)
- Mike Bradecich - Adam Connors (ep295)
- Mike Erwin - Devon Watson (ep94), Sam Radner (ep430)
- Mike Farrell - Judge Miles Deakin (eps375-376)
- Mike Foy - Eddie Patch (ep255)
- Mike Starr - Monroe Cooper (ep34)
- Mike Wade - Tyrell Brown (ep310)
- Mike Wolfe - Himself (ep347)
- Miki Ishikawa - Molly Stoll (ep430)
- Milauna Jackson - Emma Park (ep183)
- Miles Gaston Villanueva - John Alexander (ep255)
- Miles Wood - Detective James Green (ep291)
- Millie Bobby Brown - Rachel Barnes (ep264)
- Mim Drew - Mother (ep134)
- Mimi Kuzyk - Ginger Stevenson (ep67)
- Mimi Rogers - Joanna Teague (eps282-283)
- Minerva García - Agency Attorney (ep357)
- Ming Lo - Davey Chen (ep78)
- Mini Anden - Hannah Bresling (ep57)
- Mira Furlan - Dina Risi (ep130)
- Miriam A. Hyman - Lanny Peete (ep363)
- Misha Collins - Justin Farris (ep73)
- Missy Yager - Michelle Davison (ep32)
- Mitch Pileggi - Wynn Crawford (eps365, 376)
- Mo Gallini - Andre Jones (ep91)
- Moe Irvin - Commander Daly (ep354)
- Molly Hagan - Audrey Vetter (ep42)
- Monica Lawson - Nurse (ep247)
- Monnae Michaell - Leandra Womack (ep425)
- Montae Russell - Joseph Clark (ep426)
- Morgan Obenreder - Mary Burk (ep295)
- Morgan Weisser - Vincent Hanlan (ep36)
- Morocco Omari - Agent Thomas Survoy (eps58, 190)
- Mouzam Makkar - Mira Sahar Azam (eps379-380)
- Muse Watson - Michael Franks
- Musetta Vander - Julie Merriweather (ep169)
- Mya Harrison - Samantha "Jade" King (ep39)
- Myk Watford - Major Eric Sweigart (ep97)
- Myndy Crist - Jennifer Vickers (ep278)
- Naama Kates - Rose Woodhouse (ep119)
- Nadia Bowers - Gwyneth Massey (ep196)
- Nalini Sharma - Leslie Vyas (ep348)
- Nancy Linehan Charles - Ruthann Harrison (ep408)
- Nancy Youngblut - Joanna Dalton (ep447)
- Nanrisa Lee - Regina Ward (ep486)
- Naomi Grace - Kayla Vance
- Nasser Faris - Arash Kazmi (eps221-222)
- Nat Faxon - Carter Finch (ep52)
- Natalija Nogulich - Judge Maddox (ep234)
- Nate Scholz - Todd Bennett (ep289)
- Nathan Anderson - Luke Walters (ep41)
- Nathan Sutton - Barry Goode (ep342)
- Nathan Wetherington - Ensign Evan Hayes (ep31)
- Navid Negahban - Jalil Shaloub (ep88)
- Naz Deravian - Mosuma Daoub (ep126)
- Neal Honda - Victor Chan (ep479)
- Ned Schmidtke - Congressman Frank Getz (ep78)
- Ned Vaughn - Captain Dean Pullman (ep106)
- Neil Brown Jr. - Martin Archer (ep233)
- Neil Hopkins - Jeremy Davison (ep32)
- Neil Sandilands - Hendric Kruger (ep317)
- Nestor Serrano - Jeremy Marlens (ep248)
- Nichelle Hines - Norma Hench (ep243)
- Nicholas Gonzalez - David Silva (ep307)
- Nicholas Guilak - Bassam (ep23)
- Nick Boraine - Merriweather (eps401, 403)
- Nick Chinlund - Detective Steve Rosetti (ep110)
- Nick Clifford - Reed Haring (ep329)
- Nick Eversman - Judd Stern (ep177)
- Nick George - Dr. James Donovan (ep480)
- Nick Gomez - Nicky Jones (ep287)
- Nick Jandl - Michael Kettering (ep320)
- Nick Massouh - Ramandi (ep261)
- Nick Puga - Gregg Rogers (ep312)
- Nick Searcy - Joseph Barnes (ep96)
- Nick Spano - Sgt. Rudi Haas (ep101)
- Nick Tarabay - Haziq Khaleel (ep136)
- Nick Toren - Dwight's Father (ep289)
- Nicki Micheaux - Detective Naeher (ep340)
- Nicole DuPort - Emily McBride (ep234)
- Nicole J. Butler - Coordinator (ep293)
- Nicole Steinwedell - Olivia Chandler (ep242)
- Nigel Gibbs - Theodore Tully (ep208)
- Nike Doukas - Marie Stanhope (ep394)
- Nikita Ager - Shannon O'Hara (ep98)
- Nikki Crawford - Doctor Shawna Street (ep408)
- Nikki Deloach - Maya Leland (ep265)
- Nikko Austen Smith - Amanda Grayson (ep455)
- Niko Nicotera - Albert Leary AKA Vicious (ep364)
- Nikolai Nikolaeff - Xavier Zolotov (ep392)
- Nina Concepción - Gladys Molina (ep460)
- Nina Foch - Mrs. Victoria Mallard (eps36, 66)
- Nina Rausch - Devon Hill (ep309)
- Noa Tishby - Agent Claire Connell (ep139)
- Noah Segan - Kyle Hendricks (ep13)
- Nolan North - Officer Lou Giotti (ep74)
- Nondumiso Tembe - Josie Sparks (ep214)
- Norbert Weisser - Dr. Rutger (ep10)
- Noshir Dalal - Doctor Tom Masuda (ep428)
- Novi Brown - Olive Miller (ep431)
- Nynno Ahli - Chief Rick Green (ep90)
- Obba Babatundé - Joe Banks (ep131)
- Octavius J. Johnson - Gary (ep278)
- Oded Fehr - Ilan Bodnar
- Odelya Halevi - Samira Hassan (ep314)
- Oleg Taktarov - Viggo Drantyev (eps112-113)
- Olesya Rulin - Kim Troutman (ep254)
- Oliver Muirhead - Jay Danorth (ep140)
- Olivia Burnette - Sarah Lowell (ep45)
- Olivia Sanabia - Serena Zawadski (ep459)
- Olivia Taylor Dudley - Jancey Gilroy (ep175)
- Omar J. Dorsey - Vernon Dale (ep236)
- Omid Abtahi - Saleem Ulman (eps138-139)
- Oren Dayan - Karif Yasin (eps170-171)
- Oscar Best - Phil Newcastle (ep440)
- Oscar Torre - Xavier Rios (ep131)
- Owen Beckman - Nicholas Barnes (ep96)
- Owen Saxon - Luke Undervoy (ep386)
- P.J. Byrne - Ross Logan (ep59)
- Paige Turco - Linda Pride (ep252)
- Pam Dawber - Marcie Warren
- Pamela Dunlap - Mom (ep214)
- Pancho Demmings - Gerald Jackson
- Parry Shen - Ben Richmond (ep11)
- Pat Asanti - Ruben Williams (ep225)
- Pat Healy - Jonathan Hanlan (ep36)
- Pat Lentz - Ginny Daniels (ep218)
- Patch Darragh - Tom Adams (ep173)
- Patricia Bethune - Paulette Quinn (ep292)
- Patricia De Leon - Gloria Hernandez (ep275)
- Patricia Richardson - Judy Price Fielding (ep421)
- Patrick Bristow - Channing Elroy (ep427)
- Patrick Cage - Taye Tanner (ep396)
- Patrick Cohen - Dan Garscott (ep205), Pastor Eddie Watkins (ep452)
- Patrick Cox - Carl Bjork (ep407)
- Patrick Duffy - Jack Briggs (ep390)
- Patrick Fabian - Ray Vincent (ep104)
- Patrick Fischler - George Stenner (ep109)
- Patrick J. Adams - Tommy Doyle (ep119)
- Patrick Labyorteaux - Bud Roberts, Jr., Olev Kozlov (ep442)
- Patrick Luwis - Mike (ep444)
- Patrick Mulvey - Meylo (ep239)
- Patrick St. Esprit - Commander Weidman (ep130)
- Patrick Stafford - Billy Wayne (ep207)
- Patrick Y. Malone - Chuck Gorton (ep422)
- Paul Bartholomew - Spencer Dodd (ep300)
- Paul Cassell - Bart Crowley (ep227)
- Paul Ganus - Doyle Roden (ep319)
- Paul Greene - Renny Grant (ep129)
- Paul Hodge - UN Soldier (ep238)
- Paul Johansson - Porter Brandt (ep395)
- Paul Mabon - Lucas's Father (ep289)
- Paul Norwood - Jesse Gilford (ep387)
- Paul Perri - Marvin Atwood (ep23)
- Paul Rae - Steve Hager (ep44)
- Paul Schackman - Sullivan Brady (ep312)
- Paul Schulze - Major Ken Meyers (ep64)
- Paul Telfer - Corporal Damon Werth
- Paul Zies - Big Bark (ep470)
- Paula Newsome - Jackie Vance
- Paulina Bugembe - Vera Armstrong (ep381)
- Peggy Dunne - Doris Tolchuck (ep332)
- Peggy Stewart - Elderly Lady (ep120)
- Pej Vahdat - Nigel Hakim (eps354-355)
- Penny Johnson Jerald - Joanne Torrence (eps145, 150)
- Pepper Sweeney - Commander Jeff Fletcher (ep70)
- Perrey Reeves - Wendy Miller (ep201)
- Perry Anzilotti - Ted Rodgers (ep143)
- Pete Gardner - Harpers Ferry Police Detective Swanson (ep304)
- Peter Birkenhead - Troy Webster (ep91)
- Peter Breitmayer - Dwight Romano (ep226)
- Peter Cambor - Nate Getz (eps135-136)
- Peter Coyote - Ned Quinn (ep124)
- Peter Elbling - Gentleman/Samuel Colpepper (ep261)
- Peter Giles - Torsten Engler (ep81)
- Peter Graham - Christopher Crane (ep391)
- Peter Holden - Vector Control Worker (ep166)
- Peter James Smith - Benjamin Harmey (ep325)
- Peter Jason - SGM Robert King (eps134, 352)
- Peter Kelamis - Bruce Johnson (ep207)
- Peter Mackenzie - Jack Murdoch (ep207)
- Peter Macon - ICE Agent Baldwin (ep313)
- Peter Murnik - Michael Caplinger (ep398)
- Peter Navy Tuiasosopo - Charles "Chucky Bang" Kang (ep225)
- Peter O'Meara - Marco Sali (ep281)
- Peter Porte - Owen Belfort III (ep437)
- Peter Onorati - Chief of the Boat (ep7)
- Peter S. Kim - Dracula Clerk (ep360)
- Peter Woodward - Devoisier (ep153)
- Phil Morris - Capt. Paul Martino (ep59)
- Philip Anthony-Rodriguez - Lloyd Jackson (ep87)
- Philip Casnoff - Sean Latham (eps187, 198)
- Philip Shahbaz - Doctor Hamza Bashar (ep412)
- Philip Smithey - Clint Asher (ep326)
- Phillip Rhys - Agent Yussif (ep54)
- Pilar Holland - Lucia Campbell (ep458)
- Ping Wu - Peter Liu (ep370)
- Piter Marek - Vijay Chaya (ep215)
- Presilah Nunez - Cheryl Stanley (ep319)
- Preston Jones - David Collins (ep324)
- Priscilla Barnes - Mrs. Skalbe (ep287)
- Rachel Boston - Siri Albert (ep75)
- Rachel DiPillo - Chelsea (ep270)
- Rachel Grate - Ranger Mina (ep149)
- Rachel Kimsey - Petty Officer Erica Perelli (ep107)
- Rachel Luttrell - Stephanie Mosner (ep196)
- Rachel Ticotin - Joy Aaronson (ep446)
- Rafael Petardi - Afrim Murati (ep414)
- Rafi Silver - Qasim Naasir
- Raffi Barsoumian - Rafiq Bawali (ep191)
- Rahnuma Panthaky - Neera Kapoor (ep364)
- Ralph Cole Jr. - Gary Clifford (ep356)
- Ramiz Monsef - Mitchell Young (ep341)
- Ramon De Ocampo - Lt. Gorman (ep238)
- Randall Batinkoff - Walt Freeman (ep430)
- Randy J. Goodwin - Diego Clare (ep18), Clark Anderson (ep420)
- Randy Oglesby - Scott Oliver (ep177)
- Randy Vasquez - Phillip Caffey (ep278)
- Randy Wayne - Grant Bridges (ep55)
- Ransford Doherty - Zachary Harper (ep371)
- Raphael Sbarge - Rupert Kritzer (ep168)
- Ravi Kapoor - Bashir Malik (ep247)
- Ravil Isyanov - Robert John Stevens/Nikolai Puchenko (ep74)
- Ray Abruzzo - Rick Azarri (ep118)
- Ray Campbell - Tatum Dell (ep131)
- Ray Laska - Andor Gorgova (ep177)
- Ray Stoney - Ben Golden (ep336)
- Ray Wise - Wayne Tobett (ep201)
- Raychel Diane Weiner - Reese Goldman (ep326)
- Raz Adoti - Mike Sullivan (ep192)
- Rebecca Boyd - Lisa Peary (ep9)
- Rebecca Creskoff - Hillary Taffet (ep132)
- Rebecca De Mornay - Carla Marino (eps473, 487)
- Rebecca Lowman - Navy Lieutenant Lisa Mason (ep164)
- Rebecca McFarland - Detective Rachel Rapp (ep35)
- Rebecca Staab - Greta Boyen (ep29)
- Rebecca Tilney - Madeline Dumont (ep181)
- Rebecca Wisocky - Jody Carvell (ep75)
- Rebekah Brandes - Zoe Bellows (ep125)
- Reggie Austin - Carlton Mane (ep229), Peter Braden (ep482)
- Reggie Hayes - Café Owner (ep269)
- Reggie Lee - Jonathan Chow (ep106)
- Regi Davis - Commander David Smith (ep259)
- Reginald Ballard - Antwane Mann (ep17)
- Reiko Aylesworth - Ann Marshall (ep304)
- Reiley McClendon - Private Brad Sykes (ep225)
- Rena Sofer - Margaret Allison Hart
- René Ashton - Justine Wolfe (ep297)
- René Auberjonois - Dr. Felix Blackwell (ep213)
- René L. Moreno - Hector Cruz (ep115)
- Renée Threatte - Adriana Broussard (ep453)
- Rey Valentin - Agent Dwayne Wilson (ep120)
- Rhomeyn Johnson - Trucker Al (ep360)
- Rich Ceraulo Ko - Muncie Tyson (ep358)
- Rich Hutchman - Deputy Andrews (ep380)
- Rich McDonald - Lieutenant Robert Deckard (ep121)
- Richard Balin - Marty (ep223)
- Richard Brooks - Lieutenant Colonel Walsh (ep9)
- Richard Burgi - Randall Hammond (ep161)
- Richard Doyle - 1st Veteran (ep325)
- Richard F. Whiten - Lt. Jody Hampton (ep51)
- Richard Fancy - Leonard Weiss (ep312)
- Richard Keith - Frank Dreyer (ep67)
- Richard Lineback - Chuck Winslow (ep117)
- Richard Reid - Robert Epplund (ep205)
- Richard Riehle - Walt Osorio (eps289, 320)
- Richard Ruccolo - Ronald Troutman (ep254)
- Richard Schiff - Harper Dearing
- Richard Tillman - Sergeant Davis Carter (ep156)
- Richie Stephens - Edgar Proust (ep412)
- Rick Cosnett - Sean Parks (ep353)
- Rick Gonzalez - Lenny Machaca (ep240)
- Rick Hall - Larry Ambrose (ep317)
- Rick Hoffman - Kelvin Ridgeway (ep109)
- Rick Kelly - Navy Captain (ep100)
- Rick Otto - Adrian Nelson (ep96)
- Rick Overton - Elmer Barlow (ep387)
- Rick Pasqualone - Corporal Paul Defelmair (ep2)
- Rick Peters - Vincent Maple (eps208-209)
- Rick Ravanello - David Harris (ep281)
- Rick Worthy - Captain Logan Doyle (ep214)
- Rickey Eugene Brown - Ed Thomas (ep408)
- Ricky Whittle - Lincoln (ep226)
- Rif Hutton - Phillip Braxton (eps362, 419)
- Rio Mangini - Ned (ep422)
- Rizwan Manji - Dr. Pandy (ep45)
- Roark Critchlow - Wayne Grossman (ep173)
- Rob Boltin - Captain Todd Newell (ep26)
- Rob Brownstein - Wayne Gordon (ep83)
- Rob Evors - David Harketti (ep248)
- Rob Gleeson - Nicholas Raymond Dunne (ep260)
- Rob Mainord - Myron Holt (ep355)
- Rob Mayes - Kyle Baxter (ep202)
- Rob Nagle - Wayne Usher (ep208)
- Rob Welsh - Julian Reinhardt (ep437)
- Robb Derringer - Jon Phelps (ep212)
- Robert Adamson - Lucas Craig (ep272)
- Robert Bagnell - Leonard Rush (ep1)
- Robert Baker - Seaman (ep6)
- Robert Blanche - Brett Willis (ep50)
- Robert Catrini - Jake Ford (ep223), General Floyd Brancato (ep471)
- Robert Cicchini - Agent Daniel Snyder (eps16, 23)
- Robert Clendenin - Pharmacist (ep378)
- Robert Costanzo - Jimmy "Jimmy Naps" Napolitano (ep28)
- Robert Craighead - Simon Lewis (ep202)
- Robert Curtis Brown - Gary Tolin (ep165)
- Robert Gant - Mike Dunkel (ep226)
- Robert Joseph - LCDR Folsom (ep22)
- Robert Knepper - Benson Long (ep284)
- Robert Mailhouse - Malcolm Lucas (ep402)
- Robert Mammana - Sheriff Greg Pearson (ep350)
- Robert Maxhimer - Park Officer Will Elliott (ep155)
- Robert Neary - Travis Cook (ep287)
- Robert Newman - Wayne Hargrove (eps176, 237)
- Robert Patrick - Colonel Merton Bell (ep144)
- Robert Patrick Benedict - Aaron Alan Wright (ep35)
- Robert Picardo - Dale Harding (ep445)
- Robert Pine - Ben (ep5), Committee Chairman (ep331)
- Robert Ri'chard - Seaman Richard Zell (ep130)
- Robert Rusler - Lt. Col. Curtis Teague (ep26)
- Robert Wisdom - Warden Gene Halsey (ep125)
- Roberta Hanlen - Joann Dearing (ep211)
- Robin Dunne - Lt. Joseph Marsden (ep97)
- Robin Karfo - Zaiyema (ep355)
- Robin Patricia McDonald - Loni Braddish (ep356)
- Robin Pearson Rose - Clea's Mother (ep168)
- Robin Riker - Saleena Lockhart (ep34)
- Robin Sachs - Andrew Challis (ep203)
- Robin Thomas - Dr. Neil Fleming (ep99)
- Robinne Lee - Doctor (ep329)
- Robyn Cohen - Annie Nelson (ep167)
- Rochelle Aytes - Tara Kole (ep131)
- Rochelle Greenwood - Ensign Cara Blake (ep148)
- Rochelle Robinson - Megan Boone (ep366)
- Rocky McMurray - Officer Mitchell (ep241)
- Rod Rowland - Jonah Maguire (ep240)
- Roderick L. McCarthy - Dane Frazier (ep146)
- Rodney Eastman - Wendell Kaiser (ep242)
- Rodney Scott - Brian Dempsey (ep68)
- Rodney To - Doctor Steven Cho (ep336)
- Roger Cross - LCDR David Warfield (ep107)
- Roma Maffia - Vera Strickland (ep237)
- Ron Melendez - Lieutenant Gregory Dennis (ep196)
- Ron Morehouse - Officer Bixby (ep180)
- Ronald Auguste - Isaac (ep428)
- Ronnie Gene Blevins - Ronald Nowakowski (ep132)
- Rory O'Malley - Cliff (ep475)
- Rose Portillo - Sheriff Jo (ep466)
- Rose Rollins - Megan Huffner (ep220)
- Ross Gibby - Petty Officer Vengal (ep22)
- Ross Thomas - Kyle Sterling (ep191)
- Roxana Brusso - Noemi Cruz (ep94)
- Roxana Ortega - Dr. Susanna Soto (ep277)
- Roxana Zal - Marie Foley (ep18)
- Rudolf Martin - Ari Haswari (ep200)
- Russell Richardson - Sergeant C. Spooner (ep224)
- Russell Sams - Daniel Graves (ep229)
- Russell Wong - Feng Zhao (ep462)
- Ruth Rudnick - Gina Goodwin (ep60)
- Rya Kihlstedt - Linda Idleton (ep196)
- Ryan Bittle - Detective Justin Kemp (ep124)
- Ryan Carlberg - John Goode (ep277)
- Ryan Carnes - Bryce Leitner (ep182)
- Ryan Cutrona - Ray Beringer (ep151)
- Ryan Doom - George Bishop (eps292, 314)
- Ryan Honey - Colin Stone (ep146)
- Ryan Kennedy - Peter Woodruff (ep288)
- Ryan Masson - Arthur Vernon (ep455)
- Ryan Sands - Captain (ep280)
- Ryan Tasz - Petty Officer David Bowman (ep17)
- Saba Homayoon - Faatin Amal (ep71)
- Sadie Stratton - Renee Watts (ep446)
- Saidah Arrika Ekulona - 911 Dispatcher (ep299)
- Sal Landi - Commander Stovic (ep6), Bill Zaprowski (ep360)
- Salli Richardson-Whitfield - Carrie Clark
- Salome Azizi - Correspondant (ep306)
- Sam Anderson - Walter Carmichael (ep164)
- Sam Daly - Dale Moseby (ep373)
- Sam Duffy - Elmo Miller (ep468)
- Sam Lerner - Nathan Tobias (ep188)
- Sam Littlefield - Oliver Sherry (ep366)
- Sam McMurray - Vince Westfal (ep189), Harold Lamb (ep474)
- Sam Sarpong - Bobby Jackson (ep3)
- Sam Witwer - Staff Sgt. Rafael (ep21)
- Samaire Armstrong - Melissa Goodman (ep335)
- Samantha Cope - Heather (ep277)
- Samantha Logan - Riley Davis (ep300)
- Samantha Quan - Amy Lyndon (ep239)
- Samantha Sloyan - Emily Goodwin (ep194)
- Samer Salem - Mateen Jamaah (ep452)
- Samm Levine - Fred Seymour (eps169, 202)
- Sammi Hanratty - Tanya Jacobs (ep364)
- Sammi-Jack Martincak - Young Chloe Crane (ep368)
- Sandra Hess - Regine Smidt
- Sandra Nelson - Jessica Terdei (ep304)
- Sandra Thigpen - Nurse Annie Hayes (ep94)
- Sara Fletcher - Louise Cabrisio (ep350)
- Sara Paxton - Amber Carnahan (ep474)
- Sarah Aldrich - Karen Upline (ep249)
- Sarah Clarke - Tess Monroe (eps305-306)
- Sarah G. White - Samantha Watkins (ep406)
- Sarah Hagan - Sandy (ep228)
- Sarah Jane Morris - Erica Jane "EJ" Barrett
- Sarah Manninen - Hannah Gator (ep167)
- Sarah Stouffer - Hanna Devereaux (ep411)
- Sarah Utterback - Elaina Marcus (ep140)
- Sarai Givaty - Mossad Officer Liat Tuvia (eps170-171)
- Sasha Roiz - Agent Richard Hall (ep89)
- Sara Botsford - Dr. Helen Berkley (ep91)
- Satya Bhabha - Asa Zoranj (ep195)
- Scott Alan Smith - Det. Mark Mauceri (ep39)
- Scott Anthony Leet - Jason Edom (ep63)
- Scott Atkinson - LCDR Kyle Ross (ep61)
- Scott Beehner - Milton (ep255)
- Scott Christopher - Detective Edmund Kerrigan (ep397)
- Scott Connors - Sergeant Mitch Wilkins (ep129)
- Scott Deckert - Bobby (ep397)
- Scott Grimes - Detective Danny Price (ep184)
- Scott Holroyd - P.O. Kevin Massey (ep110)
- Scott Klace - Dr. Timothy Hass (ep86)
- Scott Lawrence - Captain Thomas Lind (ep176), Raymond Frank (ep454)
- Scott Lowell - Terry Thomas (ep179)
- Scott MacArthur - Luke Grismer (ep221)
- Scott MacDonald - Agent Roger Cooke (ep21)
- Scott Michael Campbell - Robert Miller (ep76)
- Scott Mosenson - Harry Day (ep422)
- Scott Paulin - Captain Kevin Dorn (ep66)
- Scott Speiser - Rafi Ali (ep276)
- Scott Subiono - Louis Lancaster (ep316)
- Scott Waara - Mel Frazier (ep237)
- Scott William Winters - Westley Clark
- Scott Williamson - Governor Charles Norin (ep49)
- Scott Wolf - Casey Stratton (eps187, 198), Jonathan Cole (ep210)
- Scottie Thompson - Dr. Jeanne Benoit
- Seamus Dever - Graham Thomas (ep73), Gabriel LaRoche
- Sean Astin - Tyler Elliott (ep204)
- Sean Blakemore - Jerome Carr (ep174)
- Sean Carrigan - Michael Vinton (ep324)
- Sean Cullen - Police Major Frank Raimey (ep184)
- Sean Harmon - Young Leroy Jethro Gibbs
- Sean Marquette - Evan Lowry (ep233)
- Sean McGowan - Lt. Wallace (ep14)
- Sean O'Bryan - David Shields (ep29)
- Sean Patrick Murphy - Arnold Craig (ep258)
- Sean Patrick Thomas - Ian Rackham (ep369)
- Seana Kofoed - CEO Virginia Wilson (ep287)
- Sebastian Quinn - Otto (ep412)
- Sebastian Sozzi - Kevin Deacon (ep398)
- Senta Moses - Katherine Atwood (ep257)
- Ser'Darius Blain - Tall Player (ep229)
- Serafina Polite - Emma (ep387)
- Seth Adkins - Sean Hodges (ep65)
- Seth Coltan - Deputy Allen Smedley (ep336)
- Seth Peterson - Thomas Pearce (ep193)
- Shaan Sharma - Kasim Alfarah (ep317)
- Shahine Ezell - Lenny (ep397)
- Shak Ghacha - Dominick Rubin (ep295)
- Shane Blades - Sheila's Husband (ep446)
- Shane Coffey - Sean Greco (ep407)
- Shane Conrad - Lt. Dean Westfall (ep46)
- Shane Johnson - Stephen Wheeler (ep206)
- Shang Forbes - DJ Night Trap (ep39)
- Shanna Moakler - Missy Dawkins (ep156)
- Shannon Cochran - Mallory Linn (ep249)
- Shannon Lucio - Amy Harrison (ep299)
- Shannon Wilcox - Mrs. Roach (ep190)
- Shari Belafonte - Professor Annabelle Davis (ep479)
- Sharni Vinson - Jeannette (ep126)
- Sharon Brathwaite - Lisa Marsden (ep302)
- Sharon Gardner - Physical Therapist Ava (ep357), Liberty Staffing Rep (ep485)
- Shashawnee Hall - Chief Jeff Whalen (ep44)
- Shaun Duke - Azid Abu Selom (ep89)
- Shaun Toub - Khalid Mohammed Bakr (ep105)
- Shaw Jones - George Campbell (ep307)
- Shawn Patrick Clifford - Mike Novaski (ep424)
- Shea Buckner - Xavier Blackburn (ep362)
- Sheila Kelley - Victoria Dearing (ep210)
- Shein Mompremier - Desiree Mason (ep485)
- Shelby Flannery - Lindsey Wexler (ep464)
- Shelley Robertson - Captain Beverly Sharp (ep213)
- Shelly Cole - Bernadette Watson (ep94)
- Sherilyn Fenn - Jane Doe/Suzanne McNeil (ep10)
- Sherman Augustus - Captain Daniel Lemay (ep43)
- Sherri Parker Lee - Martha (ep239)
- Shi Ne Nielson - Daisy Milner (ep295)
- Shireen Crutchfield - Jane (ep347)
- Shishir Kurup - Khalil Farooq (ep248)
- Shohreh Aghdashloo - Mariam Bawali (ep191)
- Sierra McCormick - Sally Clark (ep475)
- Sima Kostov - Darya Borov (ep93)
- Simon James - Vendor (ep261)
- Simon Rex - Scott Bleeker (ep276)
- Siri Miller - Melissa Spagnolo (ep397)
- Skye LaFontaine - Betty Rose (ep407)
- Skye P. Marshall - Sara Carter (ep351)
- Skyler Maxon - Matthew Dean (ep330)
- Skyler Stone - Teagan's Uncle (ep433)
- Sloane Morgan Siegel - Max Girard (ep369)
- Sofia Pernas - Marine First Lieutenant Gabriela Flores (eps194-195)
- Sol Rodriguez - Elena Silva (ep307)
- Solomon Shiv - Parsa (ep236)
- Sommer Carbuccia - Brian Zanella (ep476)
- Sondra Currie - Lillian Hencheck (ep67)
- Sonita Henry - Captain Rebecca "Becky" Hastings (ep139)
- Sonny Valicenti - Nate Billings (eps451, 456)
- Sonya Balmores - Sandra Cornell (ep313)
- Sonya Leslie - Nancy (ep387)
- Sophina Brown - Callie Daniels (ep230)
- Spence Moore II - Jared Vance (ep464)
- Spencer Garrett - Commander Spencer (ep25)
- Spencer Locke - Amber Banks (ep202)
- Spencer Treat Clark - Ryan Smith (ep319)
- Stacey Hinnen - Delivery Driver (ep224)
- Stacie Greenwell - Marge Fields (ep260)
- Stacy Edwards - Commander Janice Byers (ep31)
- Stacy Haiduk - Melissa Dorn (ep12)
- Stan Ivar - Ben Robinson (ep170)
- Stefan Marks - Navy Lt. Ian Floyd (ep184)
- Stefanie von Pfetten - Sara Korby (ep143)
- Stelio Savante - Danny Coyle (ep101)
- Stepfanie Kramer - Sandra Holdren (ep423)
- Stephanie Arcila - Danielle (ep345)
- Stephanie Charles - Patricia Felton (ep263)
- Stephanie Childers - Mrs. Gillis (ep232)
- Stephanie Erb - Rachel Nasry (ep270)
- Stephanie Fantauzzi - Lolita (ep277)
- Stephanie Hodge - Sheriff Charlene "Charlie" Dupray (ep14), Greta Ford (ep445)
- Stephanie Jacobsen - Leia Pendergast (ep262)
- Stephanie Koenig - Lauren Hudson (ep285)
- Stephanie Lemelin - Melody Hanson (ep254)
- Stephanie Mello - NCIS Tech Cynthia Sumner
- Stephanie Michels - Sean Oliver (ep61)
- Stephanie Niznik - Sharon Bellows (ep125)
- Stephanie Venditto - Dr. Jane Leisten (ep88)
- Stephen Caffrey - Kevin Braddish (ep370)
- Stephen Friedrich - Sid (ep425)
- Stephen Full - Mister Lewis (ep368)
- Stephen Lee - Chuck Bayliss (ep102)
- Stephen Mendel - Fred Pettis (ep318)
- Stephen Monroe Taylor - Wayne "The Snail" Levinson (ep258)
- Stephen Oyoung - Andrew Hubbard (ep304)
- Stephen Snedden - Jim Murphy (ep295)
- Sterling Jones - Captain Dale Martens (ep228)
- Sterling K. Brown - Elijah Banner (ep244)
- Sterling Macer Jr. - Chris Hegarty (eps32, 270)
- Sterling Sulieman - NCIS Special Agent Emil Mineoux (ep161)
- Steve Braun - Landon Grey (ep90)
- Steve Bridges - President George W. Bush (ep1)
- Steve Eastin - Frank Smith (ep160)
- Steve Harris - Gerald Tanner (ep272)
- Steve Kazee - Michael Locke (ep110)
- Steve Olson - Dylan (ep359)
- Steve Rankin - Gunnery Sergeant Bill Atlas (ep20)
- Steve Talley - Bill (ep158)
- Steve Valentine - Miles Wolf (ep212)
- Steven Anderson - Professor (ep168)
- Steven Bauer - Miguel Torres (ep410)
- Steven Brand - Ian "Bulldog" Hitch (ep39)
- Steven Cox - Taj Robinson (ep320)
- Steven Culp - Commander William Skinner (ep100)
- Steven Eckholdt - Dr. Brad Pitt (ep45)
- Steven Elder - Nick Taylor (ep88)
- Steven Flynn - Roman Sobchek (ep478)
- Steven Helmkamp - Justin Dunne (ep242)
- Steven Krueger - Andrew Townsley (ep369)
- Steven W. Bailey - Dexter Murphy (ep201)
- Stevie Lynn Jones - Shayna Reynolds (ep482)
- Stoney Westmoreland - Larry Diamond (ep142)
- Stuart Margolin - Felix Betts (ep253)
- Stuart Stone - Dillon (ep21)
- Sue Cremin - Vivian Sutton (ep251)
- Suleka Mathew - Maria Castro (ep206)
- Sumalee Montano - Nicole Taggart (eps330-331)
- Sunkrish Bala - Amir Aziz (ep275)
- Sunnie Pelant - Lily Burke (ep367)
- Susan Blakely - Dr. Cadence Darwin (ep333)
- Susan Diol - Dr. Leslie Burke (ep76), Doris Sawyer (ep447)
- Susan Duerden - Lorraine Mallard (ep293)
- Susan Floyd - Lynn Tripp Kiley (ep116)
- Susan Kelechi Watson - Nikki Jardine
- Susan Misner - Leah Mayne (ep155)
- Susan Ruttan - Samantha Delfino (ep436)
- Susan Santiago - Camila Charo
- Susan Walters - Marcy Brooks (ep353)
- Susanna Thompson - Hollis Mann
- Susse Budde - Laura Osgood (ep53)
- Suzanne Quast - Liz Allen (ep250)
- Suzanne Savoy - Rachel Brentwood (ep360)
- Sy Richardson - Lester (ep223)
- T. Lynn Eanes - Laura Roberts (ep313)
- T.J. Linnard - Logan Chase (ep316)
- T.J. Ramini - Officer Malachi Ben-Gidon
- T.J. Thyne - Carl (ep13), Fletcher Voss (eps464, 480)
- Taja V. Simpson - Misha Rose (ep305)
- Tajh Bellow - Samuel Miles (ep403)
- Tamara Craig Thomas - Lisa Kerr (ep41)
- Tamara Taylor - Agent Cassie Yates (eps45, 68)
- Tamer Hassan - Agah Bayar
- Tamika Simpkins - Jill (ep401)
- Tania Nolan - Nena Easterling (ep372)
- Tania Raymonde - Anna Real (ep40), Chloe Marlene (ep448)
- Tanner Stine - Young Anthony DiNozzo (ep272)
- Tara Buck - P.O. Debra Marshall (ep25)
- Tara Holt - Sheba Nicholas (ep357)
- Tarek Bishara - Tariq Dotani (ep424)
- Tate Hanyok - Lana Danzette (ep267)
- Tatiana Carr - Sara Jones (ep381)
- Taylor Blackwell - Trista (ep362)
- Taylor Cole - Charlotte Cook (ep157)
- Taylor Nichols - Hank Galvaston (ep188)
- Teck Holmes - Jamal Jones (ep41)
- Ted King - Colonel Daniel Collins (ep279)
- Teddy Lane Jr. - Deputy Barney (ep380)
- Tehmina Sunny - Leyla Shakarji
- Tembi Locke - Alice Kent Staley (ep265)
- Teri Polo - Vivian Kolchak (eps435-436)
- Teri Reeves - Dana Robbins (ep237)
- Teri Wyble - Kendra Allston (ep369)
- Terrell Clayton - Commander Carl Davis (ep129)
- Terrell Tilford - Navy Captain Jack Painter (ep183)
- Terrence Hardy - George (ep112)
- Terry Bozeman - CDR Doug Jakobsen (ep92)
- Terry O'Quinn - Colonel Will Ryan (ep15)
- Terry Rhoads - Captain Brent Peters (ep11)
- Terryn Westbrook - Regina Unger (ep415)
- Tess Aubert - Piper (eps425, 431)
- Tess Lina - Nurse Maria Baliad (eps69-70)
- Themo Melikidze - Yuri Valkov (eps456-457)
- Theodore Perkins - Cadet Clay Waring (ep145)
- Theresa June-Tao - Chrissy (ep277)
- Thomas Calabro - Len Feeney (ep175)
- Thomas Crawford - Dr. Magnus (ep400)
- Tiffany Ariany - Katie Darbenian (ep303)
- Tiffany Dupont - Kimberly Nolan (ep173)
- Tijuana Ricks - Pamela Walsh (ep410)
- Tim Abell - Petty Officer First Class Jack Curtin (ep18)
- Tim Conlon - Jerry Grossman (ep296)
- Tim DeKay - Senator Patrick Kiley (ep116)
- Tim DeZarn - David Runion (ep38)
- Tim Griffin - Sergeant Malcolm Porter (ep60)
- Tim Guinee - Bartholomew Lemming/Jerome Sax (ep130)
- Tim Kelleher - Agent Christopher Pacci
- Tim Lounibos - Detective Paul Atwood (ep367)
- Tim Peper - Chad Flynderling (ep243)
- Tim Rettley - Corporal Jack Burell (ep119)
- Tim Russ - Jerry Kemper (ep68), Dr. Erik Harper (ep465)
- Tim Ryan - Greg Boyen (ep29)
- Timothy Bottoms - Ritt Everett (ep26)
- Timothy Davis-Reed - Edison Rawls (ep343)
- Tina Huang - Captain Boggs (ep451)
- Tina Lifford - Dr. Pamela Fox (ep37)
- Titus Makin Jr. - Thomas Burke (ep255)
- Titus Welliver - Capt. Roger Walsh (ep99)
- Tiya Sircar - Lauren Donnelly (ep175)
- Tobias Jelinek - Bodie Whitman (ep318)
- Todd Allen - Ranger James Landis (ep63)
- Todd Giebenhain - Leo (ep332)
- Todd Jeffries - Thomas Gardiner (ep337)
- Todd Kimsey - Captain Grant (ep26)
- Todd Louiso - Lyle Waznicki (eps289, 320)
- Todd Lowe - Agent Chad Dunham
- Todd Waring - Albert James "Jamie" Beck (ep423)
- Toks Olagundoye - Rebeka Hooper (ep191)
- Tom Ayers - Bobby Dale Douglas (ep390)
- Tom Bower - Sheriff Miller Thompson (ep26)
- Tom Costello - Nathan Roberts (ep313)
- Tom Degnan - Lonnie Davis (ep338)
- Tom Everett - Kirkwood Zaysen (ep254)
- Tom Fitzpatrick - Walter Beck (ep241)
- Tom Gallop - Victor Sterling (ep193)
- Tom Kemp - Assistant Secretary Len Gregory (ep137)
- Tom Kiesche - Bob Whitehead (ep75)
- Tom McCleister - Mr. Green (ep12)
- Tom Schanley - Lieutenant Dean Massey (ep196), CIA Officer Conrad (ep472)
- Tom T. Choi - Bradley Hall (ep291)
- Tom Virtue - Frank Satner (ep204)
- Tom Williamson - Ensign Stoddard (ep329)
- Tom Wilson - Angus Demint (ep401)
- Tom Wright - Warden Sam Kelleher (ep49)
- Tom Yi - Harold (ep421)
- Tommy Hinkley - Deer Hunter (ep5)
- Tommy Savas - Max Sanders (ep315)
- Tommy Snider - Nestor Quinn (ep463)
- Tommy Walker - Justin Hardy (ep371)
- Toni Sawyer - Elisabeth Macy (ep161)
- Tonja Kahlens - Nina Craig (ep174)
- Tony Gonzalez - Tony Francis (eps311-312)
- Tony Pasqualini - Stanley Borden (ep12)
- Tony Robinette - Nate Sullivan (ep453)
- Tony Sancho - Mitch Monroe (ep327)
- Tori Danner - Nurse Myers (ep480)
- Torri Higginson - Dr. Jordan Hampton (eps98, 126)
- Tosin Morohunfola - Doctor Wayne Pershing (ep383)
- Tracy Howe - Brian Kale (ep371)
- Tracy Middendorf - Tara Bick (ep166)
- Tracy Scoggins - Tabitha Summers (ep123)
- Travis Hammer - Randall Sledge (ep415)
- Travis Johns - Martin Curtis (ep343)
- Travis Schuldt - Pilot Paul Miller (ep317)
- Travis Wester - Miles Higgins (ep333)
- Tre Hall - Carl Hammond (ep425)
- Treisa Gary - Hannah (ep319)
- Trent Dawson - Norman Dopps/Mike Beers (ep267)
- Trevor Donovan - Thomas Buckner (ep334)
- Trevor Torseth - Al Parker (ep219)
- Trisha LaFache - Lola (ep429)
- Troian Bellisario - Sarah McGee (ep79)
- Troy Blendell - Bernard Wilson (ep411)
- Troy Winbush - Sam Keeler (ep181)
- Tug Coker - Alan Wyner (ep291)
- Turhan Troy Caylak - Mr. Jamaah (ep452)
- Ty Olsson - Burke (ep348)
- Tyler Francavilla - Dustin Vanderschmitt (ep387)
- Tyler Hynes - Devin Lodge (ep173)
- Tyler Kain - Tiffany (ep31)
- Tyler Ritter - Luca Sciuto (ep294)
- Tyler Ross - Adam Horne (ep217)
- Tyree Brown - Zak (ep265)
- Tyrees Allen - Deputy Director Dean Welsh (ep70)
- Tyson Turrou - Pete (ep322)
- Usman Ally - Victor Mir (eps388-389)
- Valeria Maldonado - Rachel (ep343)
- Valerie Cruz - Anna (ep226)
- Valarie Pettiford - Sonia Eberhart (eps417-418)
- Valarie Rae Miller - Agent Bryn Fillmore (ep140)
- Valerie Wildman - Valerie Kordish (ep226)
- Valery Ortiz - Carrie (ep342)
- Van Epperson - Pop (ep214)
- Vanessa Bell Calloway - Sally Hammond (ep252)
- Vanessa Martinez - Marta De Leon (ep458)
- Vasthy Mompoint - Janique (ep402)
- Vernee Watson - Miss Helen Frimkes (ep308)
- Victor McCay - Ashton (ep11)
- Victor Raider-Wexler - Patrick Carmody (ep82)
- Victor Webster - Dane Hogan (ep83)
- Victoria Barabas - Nelly Benin (ep262)
- Victoria Barnes - Whitley (ep395)
- Victoria Kelleher - NCIS Accountant Barbara
- Victoria Platt - Veronica Tyler (eps399, 409)
- Victoria Pratt - Tiffany (ep151)
- Vik Sahay - Ajay Khan (eps224, 268)
- Vince Duvall - Police Officer Holt (ep301)
- Vince Nappo - Jacob Scott
- Vincent Angell - Bruce Webb (ep44)
- Vincent M. Ward - Sal (ep481)
- Vincent Ward - Cop (ep178)
- Vincent Young - Mikel Mawher (ep67)
- Vinessa Antoine - Sarah Willis (ep344)
- Vinicius Machado - Sam Mathis (eps216-217)
- Virginia Williams - Leah Ramsey (eps299, 302)
- Vito D'Ambrosio - Jonny Zucado (ep400)
- VJ Foster - Arkady Kobach (ep74)
- Vladimir Skomarovsky - Colonel General Dimitri Borov (ep93)
- W. Morgan Sheppard - Marcin "Mr. Pain" Jerek (ep126)
- Wade Williams - Larry Purcell (ep237)
- Wais Wardak - Farokh (ep406)
- Walter Fauntleroy - Lamar Finn (ep298)
- Walter Perez - Lt. Michael Waters (ep256)
- Wayne Charles Baker - Tunu Alonak (ep418)
- Wayne Lopez - Desmond Walters (ep384)
- Wayne Péré - Stanley Springer (ep72)
- Wendy Braun - Cindy Sanchez (ep57)
- Wendy Davis - Kensington Bloom (ep294)
- Wendy Makkena - Dr. Rachel Cranston
- Wendy Worthington - Gila Shaw (ep399)
- Weronika Rosati - Rivka David (ep231)
- Wes Brown - Jeremy Nolan (ep173)
- Wesam Keesh - Hakim Bawali (ep191)
- Wesley Jonathan - Greg (ep124)
- West Liang - Peter Kessler (ep413)
- Wil Bethel - P.O. John Kirby (ep51)
- Wiley Pickett - Captain David Wade (ep218)
- Wilmer Calderon - Wayne Cribbage A.K.A. Tiger Dad (ep310)
- Wilson Cruz - Todd Ryder (ep90)
- Will Beinbrink - Oliver Lambert (ep219)
- Will Burke - Detective Todd Miller (ep35)
- Will Green - Mat Jebson (ep271)
- Will Harris - Murray Hines (eps235, 237)
- Will Radford - Dale Gruber (ep325)
- William Allen Young - Director Barry Hutchins (ep137), Moses McClaine (ep409)
- William Bumiller - Admiral Charles Graves (ep116)
- William Charles Mitchell - 2nd Veteran (ep325)
- William Charlton - Jeff Katz (ep295)
- William deVry - D. Stone (ep246)
- William Duffy - Harris Cobb (ep306)
- William Gregory Lee - Sgt. Keith Archer (ep56)
- William Mapother - Kyle Grayson (ep24)
- William Marquez - Dr. Javier Delgado (ep115)
- William O'Leary - Chief Martin Freydano (ep380)
- William R. Moses - Agent Kent Fuller (ep3), Edison Geary (ep391)
- William Ragsdale - Brett Creevy (ep240)
- William Russ - Philip Wickes (ep204)
- Willie C. Carpenter - Arthur Gruden (ep35)
- Winston Story - Manny (ep295)
- Wolé Parks - Navy Captain (ep237)
- Wolfgang Bodison - Park Inspector Edward Killian (ep155)
- Wyatt Smith - Frankie (ep112)
- Xolile Tshabalala - Sayda Zuri (ep102)
- Yaani King - Leandra Perkins (ep276)
- Yorgos Karamihos - Interpol officer Kohl (ep306)
- Yorke G. Fryer - Dr. C. Vargas (ep378)
- Yorlin Madera - Lance Corporal Roman Vega (ep152)
- Yvette Monreal - Maya Guzman (ep343)
- Yvonne Delarosa - Exchange Clerk (ep4)
- Zac Efron - Daniel Austin (ep59)
- Zach Tinker - David West (ep357)
- Zachary Barton - Pottery Lady (ep483)
- Zachary Cowan - Detective Grizz (ep455)
- Zachary S. Williams - Logan Kennedy (ep444)
- Zack Lively - Conrad Zuse (ep164)
- Zack Ward - Officer Billy Krieg (ep44)
- Zack Weinstein - Judd Dempsey (ep165)
- Zak Steiner - Richard Devol (ep385)
- Zakary Risinger - Hurley (ep389)
- Zane Holtz - Kevin Wyeth (ep229), Dale Sawyer
- Zeus Taylor - Kyle Seward (ep420)
- Ziah Colon - Pilar Rivera (ep421)
- Zoe Perry - Kristin Fields (ep304)
- Zoey Deutch - Lauren (ep179)
- Zoran Korach - Metro Police Officer Verma (ep262)
Special Appearances By
- Michelle Obama - Herself (ep304)
- Tony Gonzalez - Special Agent Tony Francis (eps260, 287)
Co-Stars
- A.J. Castro - Navy Seal Commander (ep270)
- A.J. Tannen - Mossad Agent (ep47)
- Aaron Norvell - Uniformed Cop #1 (ep130)
- Abraham Amkpa - Felix Kane (ep294)
- Adam Aguirre - Uniformed Room-Service Guy (ep366)
- Adam Conger - Bellhop (ep150)
- Adam Faison - Alastair (ep333)
- Adam Kaiz - Telemarketer #1 (ep361)
- Adam Lieberman - U.S. Customs Officer (ep69)
- Adam O'Byrne - Mike Norman (ep111)
- Adolfo Alvarez - Carlos (ep330)
- Adria Dawn - NCIS Tech (ep66), Sandra Frasier (ep106)
- Adrian Gonzalez - Watchstander (ep248)
- Aidan Merwarth - Uptown (ep419)
- Aidan Sussman - Jacob Wooten (ep175)
- Akinsola Aribo - Jared Vance
- Akuyoe Graham - Zayah (ep290)
- Alain Uy - Ray Kessel (ep233)
- Alan Pietruszewski - Navy Captain Tom Zill (ep70)
- Alana Stelling - Petty Officer Meg Walker (ep37)
- Aleene Khoury - Tabina (ep109)
- Alejandro Pina - EMT Jonny (ep181)
- Aleksandar Filimonovic - Armed Bodyguard (ep321)
- Aleksandra Kaniak - Russian Nurse (ep93)
- Alex Avant - Clerk (ep6)
- Alex Frost - Jerry (ep63)
- Alex Morris - Kurt Nelson (ep170)
- Alex Mortensen - Emmet (ep447)
- Alex Nevil - Male Patient (ep383)
- Alex S. Alexander - Sara Turcott (ep29)
- Alex Stemkovsky - Bodyguard (ep287)
- Alex Solowitz - Dave (ep13)
- Alex Weed - Johnny (ep17)
- Alexa Hamilton - Sybil Rigg (ep354)
- Alexander Davis - Landon Pottorf (ep333)
- Alexander Harris - Museum Docent Sal (ep448)
- Alexandra Bokyun Chun - Phyllis Wu (ep370)
- Alexandra Kyle - Emma Vickers (ep278)
- Alfred Chou - Driver (ep465)
- Alisa Allapach - Sheila (ep473)
- Alison Rood - Tina (ep413)
- Alison Trumbull - Karen (ep385)
- Allel Aimiche - Fu'Ad Hansur (ep258)
- Allene Quincy - Goth Wannabe (ep395)
- Allie Davis - Sandy (ep415)
- Allyssa Amelia Entz - Lexie Miller (ep317)
- Alonso Alvarez - Ramon (ep330)
- Alyvia Alyn Lind - Emma Daly (ep245)
- Amadeo Fusca - Gun Smuggler (ep448)
- Amanda Jaros - Peg (ep316)
- Amari O'Neil - Edgar (ep396)
- Amin Joseph - Campbell (ep131)
- Amir Talai - Simi (ep23)
- Amy Lyndon - Goldilocks (ep106)
- Amy Tipton - Liza Taylor (ep43)
- Ana Maria Lagasca - Maid (ep129)
- Ana Mercedes - Glenda (ep128)
- Andra Fuller - Navy Petty Officer Scott Roebuck (ep158)
- Andre Forrest - Scott Dickerson (ep423)
- Andre M. Johnson - Bailiff Colt McKinney (eps375-376)
- Andrea Bordeaux - Courtney (ep237)
- Andrew Bongiorno - Louis Freston (ep277)
- Andrew Bridges - Lazlo Downey (ep326)
- Andrew Hwang - Nervous Asian Man (ep114)
- Andrew Kirsanov - The Russian (ep171)
- Andrew Pattison - Victor Davies (ep176)
- Andy Cohen - Doctor Warren Cole (ep339)
- Andy Favreau - Navy Lieutenant Eric Kutzler (ep271)
- Andy Marques - Policeman (ep447)
- Andy Shephard - Mark Hill (ep205)
- Angela Sprinkle - Mary (ep377)
- Angelo Romanelli - Master at Arms Dobson (ep208)
- Anita Kalathara - High School Kid #1 (ep218)
- Ankur Bhatt - Salman Umar (ep89)
- Anna Claire Sneed - Jane Murphy (ep295)
- Anny Elizabeth Rosario - Navy Lt. Jasmine Coyne (ep456)
- Anthony De Longis - Tough Trucker #1 (ep447)
- Anthony Hill - John Blaney "JB" Hicks (ep266)
- Anthony Molinari - Masked Man (ep440), Militia (ep452)
- Anthony Palermo - Nicholas "Nick" Bodeen (ep250)
- Antwan Razor Daniels - Martin (ep87)
- Arber Mehmeti - Interrogator (ep485)
- Archie Drury - Rod Spain (ep18)
- Ariana Elavia - Yazmin (ep406)
- Aric Hendrix - FBI Agent Eric Ford/Carla's Thug (ep487)
- Ariel Felix - Alon Atu (ep69)
- Ariel Llinas - Federale #1 (ep162)
- Ariel Mirabal-Ramos - Ensign (ep115)
- Armando Molina - Miguel Fernandez (ep74)
- Armen Nahapetian - Allen (ep396)
- Arnold Chon - Charles Park (ep410)
- Art L. Cortez - Homeless Man (ep256)
- Asante Jones - Homicide Detective Andy Kochofis (ep1)
- Ashlee Füss - Teenage Girl (ep232)
- Ashley Dulaney - Rebecca (ep417)
- Ashlynn Yennie - Daughter (ep293)
- Austin Basis - Dallas (ep114)
- Austin Bowerman - Young Walter Beck (ep241)
- Austin Iredale - Kyle Larson (Age 30s; ep375)
- Austin Noha Marques - Billy Fuentes (ep2)
- Austin Powell - Floyd (ep455)
- Austin Priester - Lt. Bryce Armstrong (ep115)
- Barry Livingston - Bartholomew Lemming (ep130)
- Bayardo De Murguia - Franco Alvarez (ep307)
- Becca Q. Co - Gwen Yong (ep456)
- Becky Wu - June Davis (ep434)
- Bee-Be Smith - Volunteer (ep364)
- Ben Guillory - Henry (ep30)
- Ben Maccabee - Afghan Local Leader (ep238)
- Ben Morrison - Young Eli David
- Ben Turner Dixon - Young Mike Franks (ep400)
- Ben Ziff - Jonathon (ep31)
- Benjamin Fitch - Mechanic (ep141)
- Benmio McCrea - Lawyer (ep461)
- Benny Briseño - Xander Price (ep401)
- Beth Fraser - Reporter #1 (ep438)
- Bianca Belle - Jennifer Larson (Age 7; ep375)
- Bibi Amos - Receptionist (ep45)
- Biff Wiff - Old Man (ep301)
- Bill Birch - State Trooper Dan Lynch (ep5)
- Bill Pryor - NCIS Agent #1 (ep448)
- Bill Stevenson - Hector (ep124)
- Billy Choi - NCIS Agent (ep212)
- Billy Finnigan - Joey Vittorio (ep120)
- Blaine Miller - Patrick Wigg (ep285)
- Blake Webb - Chandler Phillips (ep340)
- Blake Webber - Daniel Beck (ep391)
- Blayne Weaver - P.O. Darrell Baum (ep25)
- Bo Youngblood - Janis (ep332)
- Bob McCracken - Joshua Drewe (ep159)
- Bobby Neely - Roland Alan Moore (ep29)
- Bobby Ray Cauley Jr. - ND Caddy (ep353)
- Bonnie Bailey-Reed - Flo (ep484)
- Brad Grunberg - Big Ed (ep315)
- Brad Havens - Taxi Cab Driver (ep220)
- Bradford Anderson - Second Geek (ep114)
- Bradley Snedeker - Petty Officer Carnahan (ep4)
- Brady Allen - Benjamin Curtis (ep264)
- Brandon Hirsch - Marine Corporal Kelvin Taylor (ep117)
- Brandon Molale - Army CID Special Agent Jack Reynolds (ep83)
- Brandon Papo - Bobby (ep442)
- Branton Box - John Smith (ep188)
- Braxton Beckham - Adam Tepper (ep229)
- Braxton Hale - Colin (ep429)
- Brenda Vivian - Waitress (ep236)
- Brendan Bradley - Male Guest (ep219)
- Brenden Whitney - Admiral McGee's Driver (ep229)
- Brenna Radding - Kelly Gibbs (ep101)
- Brent Chase - Nathan Thomas (ep221)
- Brent Henri - Kendall "Trey" Quichera (ep384)
- Brent McGregor - Rodney Romano (ep226)
- Brett Gipson - Guard Sam (ep359)
- Brian Andries - Kyle Campbell (ep327)
- Brian Burnett - Benji Kass (ep135)
- Brian Groh - Billy Cole (ep119)
- Brian Jimenez - Anshiri (ep354)
- Brian Jones - Uniformed Guard (ep107)
- Brian Maierhofer - Lt. Edward O'Connell (ep337)
- Brian Norris - Lucas (ep123)
- Brian Oblak - MPD Cop #1 (ep373)
- Brian Thomas Fitzpatrick - Willis Hirst (ep53)
- Brian Wade - Marine Lance Corporal (ep2)
- Briana Cuoco - Rosalind (ep387)
- Brianne Howey - High School Girl (ep188)
- Brick Jackson - Little Pinky (ep409)
- Brie Mattson - Popular Girl (ep123)
- Brittany Freeth - Pilot #2 (ep424)
- Brody Hutzler - Navy Lt. Michael Jensen (ep156)
- Bruno Gioiello - Air Boss (ep6)
- Brunson K Delves - Agent (ep388)
- Bryan Boone - Homeland Security Agent #2 (ep276)
- Bryan Friday - Captain Felix Wright (ep187)
- Bryan Lugo - Bruce Smith (ep221)
- Bryan Marcos - Pilot #3 (ep424)
- Bryce McBratnie - Chet (ep393)
- Burton Perez - Estaban Lopez (ep163)
- Byrne Offutt - Judd Kearns (ep50)
- Caleb Brown - Michael Jones (ep61)
- Calida Jones - Resident Alicia Tankersley (ep465)
- Cameron Neckers - Hale (ep354)
- Cameron Wong - Tyler (ep450)
- Carl Donelson - Edgar Ramirez (ep384)
- Carlos Acuña - Milo the Guard (ep399)
- Carlos Javier Rivera - Arturo Jimenez (ep477)
- Carlos Vera - Shooter (ep112)
- Carole Gutierrez - Woman (ep228)
- Carolyn McDermott - Zane's Mom (ep132)
- Carolyn Ratteray - Nurse (ep171)
- Carter Mitchell - Virgil (ep387)
- Cary Christopher - Kaiden Silcott/AI Kaiden (ep463)
- Casey Cameron Killian - Patient (ep453)
- Casey Krehbiel - Undercover Agent (ep478)
- Casey Leach - Danny Spagnolo (ep397)
- Casey McCarthy - Biker Chick (ep8)
- Casey Weiant - Mina Campbell (ep55)
- Catherine Kamei - Nurse Ella (ep298)
- Cazimir Milostan - Officer (ep141)
- Cecile Cubiló - Cosette (ep370)
- Celestin Cornielle - Marine Corporal Keener (ep93)
- César Alejandro - Field Agent (ep420)
- Chad Addison - Young Eric Jurel (ep140)
- Chad Bennett - Homeland Security Agent #1 (ep276)
- Chad Doreck - Leo (ep13)
- Chad Michael Collins - Simon Craig (ep174)
- Chad W. Murray - Seaman MacDonald (ep4)
- Chance Denman - Josh - Best Man (ep365)
- Charles Noland - Bob Simms (ep119)
- Charles Remley III - Homeland Security Agent #3 (ep276), Navy Chief #1 (ep369)
- Charles S. Kim - SRT Sniper (ep64)
- Charley Rowan McCain - Heidi Umarov Paulsen (ep440)
- Charlie Morgan Patton - Paige (ep483)
- Charlotte Evelyn Williams - Nurse #1 (ep373)
- Chas. Floyd Johnson - AFIP Medical Examiner (ep28)
- Chaunsi Heatley - Sailor #1 (ep369)
- Chelsey Crisp - Grace Penland (ep120)
- Cherie Jimenez - Senator Ortega (ep380)
- China Anne McClain - Kayla Vance (ep131)
- Chip Chinery - Rodney Spence (ep331)
- Chris Akers - Johnny Smokerson (ep90)
- Chris Dougherty - Lou Sandlock (ep267)
- Chris Flanders - Joseph McBride (ep267)
- Chris Gardner - Joe (ep377)
- Chris Grabher - Tweaking Addict (ep184)
- Chris Jarvis - British Royal Marine Engineer (ep166)
- Chris Lamica - Shane (ep432)
- Chris Marroy - Pilot (ep354)
- Chris Mayo - Noel Huffner (ep220)
- Chris Nelson Norris - Chester Kelb (ep354)
- Chris Sheffield - Vince (ep157)
- Chrissy Kai Lee - Chelsea (ep309)
- Christian Barber - Chet Zimmerman (ep367)
- Christian Gehring - Owen Tamblin (ep237)
- Christian Svensson - Pirate #1 (ep100)
- Christian Valderrama - Clubby (ep419)
- Christina Souza - Rosemarie Fuentes (ep2)
- Christopher Allen - Overdose Victim (Joseph Taylor; ep378)
- Christopher Alvarenga - Buyer #2 (ep432)
- Christopher Bencomo - Ian Rojas (ep387)
- Christopher Carrington - Ronald "Ronny" T. Jones (ep382)
- Christopher Guyton - Bouncer (ep173)
- Christopher McDaniel - Petty Officer Greg Collins (ep123)
- Christopher Murray - Joseph Mallard (ep293)
- Ck Bolado - Ray (ep470)
- Clark Koelsch - Flight Attendant Stephan (ep151)
- Clark Moore - Phil Collins (ep432)
- Cliff Weissman - Nicholas Everett (ep157)
- Clint Carmichael - Young Jackson Gibbs (ep117)
- Cody Easterbrook - NCIS Agent Ramiro (ep478)
- Cody Esquivel - Benji Vargas (ep413)
- Cody Estes - Kevin Curtin (ep18)
- Cody Kennedy - Natasha (ep171)
- Cody Sullivan - Bradley Simek (ep280)
- Colby Paul - Skateboard Kid #1 (ep52)
- Cole Griffin - Corporal Jackson (ep20)
- Cole Sand - Young Luca Sciuto (ep223)
- Colin Bain - Ensign Ray (ep4)
- Colin Land - Brent Hollister (ep415)
- Collin Campana - Kenji (ep455)
- Conisha Wade - Movie Director (ep448)
- Conner Marx - Milo Torbush (ep308)
- Constance L. McCrory - Evidence Clerk (ep16)
- Corie Vickers - NCIS Special Agent Lynn Davis (ep93)
- Corinne Massiah - Ricki Evans (ep223)
- Cory Jacob - Rod Beecham (ep355)
- Cory Tucker - Brendan (ep356)
- Courtney Hawkins - Sketchy Gal (ep479)
- Craig Gellis - Civilian Crewman #1 (ep100)
- Craig Nigh - Melvin (ep94)
- Cristi Harris - Vicki Spain (ep18)
- Crystal Allen - Laura (ep9)
- Crystal Coney - Clara Woods (ep377)
- Crystal Rivers - Another Woman on Videoconference (ep424)
- Curt Doussett - Federal Marshal (ep28)
- Cuyle Carvin - Oliver Happ (ep214)
- D. Elliot Woods - Detective Bradley (ep184)
- D'Anthony Palms - Ticket Taker (ep193)
- Dan Desmond - Grumpy Neighbor (ep167)
- Dan Lundy - Technician (ep23)
- Dan O'Connor - Pete Shaw (ep364)
- Dan Warner - Federal Marshal (ep33)
- Dani Dare - Young Jason King (ep207)
- Daniel Curtis Lee - SRT #1 (ep424)
- Daniel L. Rivera - SRT #2 (ep424)
- Daniel Lee Robertson - See (ep143)
- Daniel Lupa-Chazan - Albert Gorsch (ep406)
- Daniella Kuhn - Saleswoman (ep10)
- Danielle Demski - ZNN Newscaster (ep374)
- Danielle Larracuente - Maria Gonzalez (ep423)
- Danielle Rayne - Leah Siffler (ep355)
- Danny Brown - Sophie (ep391)
- Danny Max - Reporter (eps395, 469)
- Danny Royce - Reporter #2 (ep438)
- Dante Brown - Skip (ep198)
- Dante Swain - Adam Meyers (ep288)
- Danton Dabar - Casino Robber (ep179)
- Dar Dixon - Army Captain Bradstone (ep3)
- Darin Cooper - Roy Evans (ep284)
- Darius De La Cruz - El Doctor (ep331)
- Darren Dupree Washington - Security Guard (ep351)
- Darren Keefe - Steven Baker (ep151)
- Dave Earnest - Marine SSGT. Erik Niles (ep76)
- Dave Shalansky - Delivery Man (ep36)
- Davee Youngblood - Unknown Man (ep427)
- David Bickford - Priest (ep268)
- David Bittick - Tom Healy (ep314)
- David Brant - NCIS Special Agent David Brant (ep55)
- David Carey Foster - Nicholas Mallard (II; ep293)
- David Cooley - Firefighter Buddy (ep483)
- David Frazier - Joe Willis (ep263)
- David Grammer - Stuart Crum (ep275)
- David Gunning - Brad Darbenian (ep303)
- David Paladino - Diego De La Rosa (ep296)
- David Pease - Sheriff Lee Chandler (ep127)
- David Pevsner - Driver (ep338)
- David Raibon - Survivalist Trainee #2 (ep103)
- David Rountree - Surveillance Technician (ep15)
- David Will No - Philip Tan (aka Hayou Tan; ep462)
- Dawn Matthews - Dr. Alice Jelani (ep398)
- Dawn Noel - Metro Police Officer Blake (ep196)
- DawnMarie Ferrara - Trucker #1 (ep360)
- Dayna Devon - Attractive Girl (ep20)
- Daz Crawford - Matt Barrows (ep85)
- Dean Wil - Francis (ep449)
- Debbie Jaffe - Waitress (ep210)
- Deborah Vancelette - Nurse (ep438)
- Dedan Donovan - Jax Wesley (ep351)
- Deepti Gupta - Doctor Conrad (ep367)
- Delpaneaux Wills - Andrew Beck (ep325)
- Demetrius Grosse - Atif Nukunda (ep102)
- Demetrius Joyette - Jonathan Zee (ep285)
- Dennice Cisneros - Disposal Technician a.k.a. Helen (ep419)
- Dennis Renard - Paramedic (ep454)
- Deprece Reddick - Spit (ep131)
- Derek Anthony - Lennox Kincaid (ep476)
- Derek Chariton - Lonny (ep415)
- Derek Phillips Jr. - Nine-year-old Jared Vance (ep464)
- Devin Crittenden - Mickey Steele (ep461)
- Dierdre Holder - Woman (ep102)
- Dio Johnson - Douglas Alexander (ep227)
- Dmitri Schuyler-Linch - Young Nick Peyton (ep180)
- Dominic Pace - Vincent Pazzo (ep53), George Barlow (ep451)
- Don Brunner II - David (ep356)
- Don Stark - Auto Mechanic (ep338)
- Donnabella Mortel - Navy Corpsman (ep283)
- Doris E. McMillon - News Anchor (ep1)
- Douglas Griffith - Himself (ep30)
- Dove Meir - Amir Mantel (ep231)
- Dustin Quick - Young Woman (ep261)
- Dwayne Macopson - Marine Major Carl Pritchard (ep1)
- Dylan Kenin - Freddie Fountain (ep209)
- Dylan Mattina - Mr. Buffalo (ep367), Tim Miller (ep385)
- Dylan Ramsey - Asad Al Qutaji (ep82)
- E. Roger Mitchell - M.P (ep8)
- E.R. Ruiz - Carson (ep434)
- E-Kan Soong - Kenneth Dent (ep370)
- Eamon Hunt - Chief Petty Officer Morris (ep4)
- Eddie Conna - Metro Police Sergeant Frank Thompson (ep99)
- Eddie Diaz - Petty Officer Gomez (ep6)
- Eddie J. Fernandez - Mexican Gunman (ep163)
- Edward Gelhaus - Edward Madden (ep413)
- Eiji Inoue - Satoshi Takada (ep100)
- Eileen Rene Prudhont - Hannah Moore (ep399)
- Ektimal Shbib - Iraqi Women (ep109)
- Ele Keats - Judy Shaw (ep364)
- Eli Hernandez - Master-at-Arms (ep448), Daryl Thomas (ep479)
- Elie Khoury - Jameel (ep109)
- Elijah Trichon - Young Howard Shelly (ep140)
- Eliza Shin - Myrna (ep356)
- Elizabeth Liang - NCIS Agent Jones (eps425, 478)
- Ellen Hollman - NCIS Special Agent Tina Larsen (ep62)
- Eloy Méndez - Chuy (ep128)
- Emanuel Borria - Ricardo (ep330)
- Emelia Golfieri - Tali (ep389)
- Emerson Brooks - Navy Lieutenant Carl Greer (ep98)
- Emil Beheshti - FBI Agent Dan Lenroff (ep196)
- Emily Liu - Trauma Surgeon (ep407)
- Emelia Golfieri - Tali (ep306)
- Emiliano Torres - Hood #1 (ep136)
- Emmie Nagata - Diana Ono (ep413)
- Eric Nelsen - Sean Quinn (ep292)
- Erica Piccininni - Navy Lieutenant Clea Thorson (ep168)
- Erick Carrillo - Mateo Serrano (ep454)
- Erick Lopez - Jaime Ribeiro (ep263)
- Erik Aude - Man In Blue Suit (ep275)
- Erika Garces - Jenna (ep332)
- Erin Ross - Melissa (ep182)
- Essam Ferris - Yann (ep484)
- Ethan Corn - Physician (ep465)
- Ethan Flower - Alfonso Romero (ep371)
- Ethan Torres - Enrique (ep330)
- Eva La Dare - Clown/Mystery Woman (ep244)
- Eva Portugues - Tali (ep388)
- Faruq Tauheed - Derek (ep202)
- Felice Heather Monteith - FBI Agent Samantha Morris (ep134)
- Fernando Rivera - Mark Forrest (ep229)
- Floyd Vanbuskirk - Rodney Garrison (ep41)
- Franco Fox - Henchman (ep400)
- Frank Alvarez - Rico (ep128)
- Fred Tate - Charles Harrow (ep84)
- Fred Toma - Sunni Man (ep105)
- Gabi Coccio - Young Ziva David
- Garrett Kruithof - Maurice Drenault (ep253)
- Gary Kraus - Chuck Parnell (ep59)
- Gary Morgan - Mario Vincetti (ep93)
- Gary Sommers - John Benedict (ep56)
- Geoffrey Kennedy - NCIS Agent #2 (ep478)
- George Paez - Pablo Silva (ep432)
- George Stumpf - Crew Chief (ep9)
- George Tsai - Nurse Keith Johnson (ep465)
- Geri-Nikole Love - Paramedic (ep403)
- Gerren Hall - Berlin Club Patron (ep231)
- Gichi Gamba - Bodyguard (ep487)
- Gilbert Chayrez-Chavarria - Male REACT Agent (ep468)
- Gina St. John - Cindy Ames (eps34, 118)
- Glenn Keogh - Thompson Daly (ep311)
- Gomez Warren IV - AV Tech (ep57)
- Grace Powell - Joyce (ep399)
- Grace Rowe - Donna Andrews (ep322)
- Greg Benson - Phillip Legrand (ep451)
- Greg Berman - Mike Benson (ep411)
- Gregory Crane - ERT Member (ep67)
- Greta Sesheta - Receptionist (ep61)
- Griffin Churchill - Chris Kingston (ep117)
- Grinnell Morris - FBI Agent Carlson (ep15)
- Gus Buktenica - Drunk Guy (ep377)
- Gwen Holloway - A.A. Chairperson (ep402)
- Haley Brooke Walker - Mila (ep453)
- Hap Lawrence - Lenny (ep389)
- Haran Jackson - Marine Private Fricker (ep156)
- Harold Cannon-Lopez - Elderly Man (ep330)
- Harold Nieves Fisch - Alexander Renard (ep460)
- Harriet Margulies - Attractive Older Woman (ep32), Older Woman (ep72)
- Harrison Forsyth - Fisher Blake (ep148)
- Harry Hutchinson - Alexandria Cop (ep17)
- Harvey J. Alperin - Henry Mantell (ep397)
- Heather Grace Hancock - Drunk Woman (ep377)
- Heather Olt - Groundskeeper (ep420)
- Hector A. Garcia - Mickey Diaz (ep128)
- Hector Atreyu Ruiz - Michael Torres (eps216-217)
- Hedyeh Falsafi - Yazmin's Mom (ep406)
- Helena Barrett - Attractive Recruit (ep120)
- Hilda Boulware - Madame Foreperson (ep411)
- Holly Hawkins - Scholarly Woman 1 (ep376)
- Hong Chau - F.B.I. Lab Tech Molly Choi (ep156)
- Hosea - Marine Lance Cpl. Jaime Ramos (ep44)
- Howard Dell - Gym Manager (ep11)
- Hrach Titizian - Tariq Abassi "Son in Law" (ep8)
- Hugh Holub - Superintendent (ep30)
- Hugo Armstrong - Eugene Coyle (ep237)
- Hugo Garcia - Ernie (ep389)
- Ian Fisher - Sergei Umarov (ep440)
- Ian Stanley - Robert Whitlock (ep452)
- Iman Crosson - Elliot Greene (ep463)
- Inger Tudor - Doctor Sandra Holdren (ep138)
- Iris Almario - Natalie Tupperman (ep289)
- Isaac Gonzalez Rossi - Marco (ep402)
- Isaac Stephen Montgomery - Prison Guard Silver (ep352)
- Isaiah Mustafa - Oliver Newcomb (ep125)
- J.P. Hubbell - Commander Mason (ep166)
- Jack Guzman - Wade (ep202)
- Jack Jaco Pitchon - Dr. Yuri Pastov (ep427)
- Jackie Johnson - Chelsea Mills
- Jackson Canning - Sketchy Senior (ep479)
- Jackson Van Houten - Edward "Blue" Turpin (ep256)
- Jade Joray Robbins - Student (ep210)
- Jake Allyn - James Sweeney (ep346)
- Jake Armbruster - Randy Hollister (ep239)
- James Babson - Mickey Clark A.K.A. Eyewitness (ep331)
- James C. Bristow - Alonzo Marcel (ep327)
- James Coholan - High School Kid #2 (ep218)
- James Ellis Lane - U.S. Marshal (ep133)
- James Ryen - Seaman (ep107)
- James Sayess - Armed Lookout (ep279)
- Jamie Hill - Chloe Chandler (ep227)
- Jamie Moss - Seaman Apprentice (ep7)
- Jamie Renée Smith - Rhiannon (ep125)
- Jamie Sara Slovon - Trish Collinson (ep325)
- Jandres Burgos - R.A.C. Guard #2 (ep330)
- Jane Hajduk - Attractive Woman (ep11)
- Janiece Jary - Woman (ep72)
- Japheth Gordon - Vendrell Brown (ep353)
- Jasmine Di Angelo - Halia (ep238)
- Jason Alan Smith - Cpl. Wade Kean (ep30)
- Jason Bremer - Marine #1 (ep213)
- Jason Christopher - Motorcycle Rider (ep33)
- Jason David - Brock Gomer (ep310)
- Jason Ko - James Chen (ep462)
- Jason Marrs - Joe (ep370)
- Jason Pierce - Liam Flattery (ep487)
- Jason Rodriguez - Brad Cole (ep328)
- Jason Sarcinelli - Eric Donner (ep183)
- Jaxy Boyd - Michelle (ep416)
- Jay Ellis - Thomas "Tommy" Hill (ep188)
- JC Leuyer - Petrov (ep485)
- Jean St. James - Woman on Videoconference (ep424)
- Jeff Barnett - David (ep116)
- Jeff Boehm - Otis Glazebrook (ep457)
- Jeff Campanella - Store Clerk (ep212)
- Jeff Elam - Lead Detective (ep410)
- Jeff Marlow - Survivalist Trainee #1 (ep103)
- Jeff Peterson - Brad (ep4)
- Jeff Pride - Car Owner (ep429)
- Jeffrey Larson - Ian Nowitski (ep382)
- Jeffrey Thomas Border - Nog Drinker (ep172)
- Jen Nikolaisen - Carla Meade (ep253)
- Jene Bush - Frank Ressler/Birdwatcher (ep435)
- Jeni C. Wilson - Lisa (ep4)
- Jennifer Carta - Veronica Crawford (ep373)
- Jennifer Lynne Wetzel - Navy Lt. Roni Seabrook (ep81)
- Jennifer Marshall - Francesca Rinaldi (ep382)
- Jennifer May - Navy Chief #2 (ep369)
- Jennifer Sun Bell - Amelia Garcia (ep390)
- Jered Solow - Young Freckles (ep400)
- Jeremiah Caldwell - Burly Bouncer (ep479)
- Jeremy A. Roberts - Marine Corporal Liam O'Neill (ep88)
- Jeremy Brandt - Corpsman (ep62)
- Jeremy Denzlinger - Bill Timmons (ep390)
- Jeremy Overstreet - Agent Bowman (ep1)
- Jerry Kernion - Scott Rowe (ep106)
- Jerry Shea - Third Geek (ep114)
- Jess Allen - Burly Bodyguard (ep366)
- Jesse Bernstein - Doctor Riley (ep352)
- Jesse Bush - Frank Carson A.K.A. Birdwatcher (ep435)
- Jesse Carere - Eric Landis (ep229)
- Jesse Conrad - William Watson (ep444)
- Jesse Heiman - Fredrick Pippin (ep43)
- Jesse Stern - Earl Stark (ep185)
- Jessica Brown - Jen (ep260)
- Jessica Gardner - Olivia Kahn
- Jessica Jade Andres - Rachel (ep402)
- Jhey Castles - Ramsay's Wife (ep318)
- Jhon Doria - Stephano Kass (ep135)
- Jill Czarnowski - Girl Geek (ep114), MTAC Technician (ep136), NCIS Tech Susan Ottsley
- Jim Lau - Vendor (ep283)
- Jimmy Deshler - Teenager (ep253)
- Jimmy Walker Jr. - Former Sgt. William Jolson (ep451)
- Joe Alvarez - Earl Davis (ep319)
- Joe Chambrello - Kidnapper (ep445)
- Joe Corzo - Henchman #1 (ep428)
- Joe Fusco - Mr. Dawson (ep461)
- Joe Renteria - Arturo "Art" Amador (ep394)
- Joey Stromberg - Gig Girard (ep340)
- Johanna Curé - Aida Torres (ep458)
- John Ahle Kellar - William/Fred Sammons (ep480)
- John Brantley Cole Jr. - Orderly (ep134)
- John Eddins - Steve (ep353)
- John Gloria - George Kaydar (eps389, 412)
- John L. Bader - Desk Clerk (ep342)
- John Marrott - Master Chief P.O. Roe (ep11)
- John Prudhont - Nathan Johnson (ep441)
- John R. Colley - Christopher Ramos (ep256)
- John Roderick Davidson - Uniformed Cop #2 (ep130)
- John Wickersham - ICE Agent Thomas Sherman (ep137)
- Johnny Kostrey - Michael Lane (ep224)
- Jon Root - Navy Pilot (ep331)
- Jonathan Camp - Colin Boxer (ep215)
- Jonathon McClendon - Evan Sykes (ep373)
- Jonathan Nail - Businessman (ep129)
- Jonathan Roumie - Officer Gerard (ep257)
- Jonathan Sadowski - Lt. Norski (ep6)
- Jonathan Salisbury - Stephenson (ep289)
- Jonathan Wade-Drahos - Lt. Gregg Pallini (ep5)
- Johnny Chavez - Driver (ep141)
- Jordan Marder - Pirate #2 (ep100)
- Jordan Murphy - Ben Randall (ep408)
- Jordyn Owens - Virgil Wilson (ep477)
- Jorga Caye - Lady (ep319)
- Josef Urban - Rosewood Boy (ep327)
- Joseph Bey - Nasser Al Jazair (ep8)
- Joseph Eid - Jumah (ep136)
- Joseph Whipp - Old Man (ep255)
- Joseph Zinsman - Amir Askari (ep257)
- Josh Drennen - Curtis Beane (ep188)
- Josh Latzer - Olek Lazarenko (ep312)
- Josh Rubenstein - Josh Rosen (ep229)
- Josh Trant - Chief of the Watch (ep371)
- Joshua Dov - Portland Douglas (ep396)
- Joshua Elijah Reese - Suited Man (ep307)
- Jossie Thacker - Nurse Wanda Dupree (ep211)
- Judith Drake - Delores (ep223)
- Julian Berlin - Didi (ep121)
- Julian Rangel - Young Nick Torres (ep458)
- Julie Dickens - Console Operator (ep115)
- Julie Wittner - Female Inmate (ep179)
- Julien Ari - Walt Fergus (ep357)
- Juliette Hanover - Granddaughter (ep359)
- Jun Kim - Steve Nuali (ep332)
- Justen Overlander - Chris Ristow (ep312)
- Justice Gamble - King (ep354)
- Justin Alston - NCIS Special Agent Holgate (ep251)
- Justin Cary - Martin "Shooter" Roe (ep256)
- Justin Cuomo - Daniel Coyne (ep246)
- Kaelyn Ilten - Alessandra Ramos (ep295)
- Kale Brady Culley - Dylan (ep385)
- Kali Majors - Sarah Niles (ep76)
- Kallee Brookes - Gwen (ep157)
- Kamal Jones - Paramedic (ep305)
- Kamel Haddad - Yemeni Foreign Affairs Minister (ep409)
- Kamran Abbassian - Nazar (ep412)
- Kanin Howell - Jeremiah Ness (ep193)
- Karina Bonnefil - Alexis (ep417)
- Karina Noelle Castillo - FBI Agent Ramirez
- Karly Rothenberg - Female Passerby (ep190)
- Kate Fuglei - Delores Bromstead (ep148)
- Kathrine Herzer - Small Girl (ep122)
- Kathryn Gordon - Young Pregnant Woman (ep22)
- Kathryn Melton - Cleaning Lady (ep446)
- Katie Roberts - Joni Ryan (ep290)
- Katrina Kelledy - Camilia Solis (ep415)
- Keith Burke - FBI Agent (ep134)
- Kelsey Scott - Lynette Doyle (ep252)
- Ken Luckey - John Kendall (ep343)
- Ken Strunk - Gas Station Owner (ep33)
- Kendall Clement - Foreman (ep25)
- Kendall Ryan Sanders - Zane Wilson (ep132)
- Kendra M. Hill - Nurse #1 (ep454)
- Kendra Munger - Nurse #2 (ep417)
- Kensie Mills - Lily
- Kent Shocknek - Guy Ross
- Kenzie Dalton - Colleen Kennedy (ep392)
- Kevin Bohleber - Stetchy Dude (ep479)
- Kevin Changaris - Simon Williams (ep445)
- Kevin Cotteleer - Paul Marvin Arliss (ep190)
- Kevin E. West - Mario (ep70)
- Kevin Joy - Kyle Nasry (ep270)
- Kevin Michael Martin - High School Boy (ep188)
- Khamani Griffin - Jared Vance (ep131)
- Kiara Muhammad - Kayla Vance
- Kiff VandenHeuvel - Peter Todd (ep354)
- Kim Estes - Minister (ep222)
- Kim Reed - Nurse #1 (ep417)
- Kim Wimmer - Darlene (ep12)
- Kimberly Alexander - Lauren Ross (ep183)
- Kimberly Atkinson - Roberta Wells (ep99)
- Kimberly Christian - Nina Bradshaw (ep418)
- Kimberly Hidalgo - Maid of Honor (ep365)
- Kirk Bovill - Richard Sims (ep364)
- Kristen O'Meara - Lydia Smith (ep332)
- Kristin Proctor - 1st Lt. Susan Ellsworth (ep40)
- Kristin Witt - Soccer Mom (ep428)
- Krys Marshall - Suzy (ep285)
- Kschris Anda - Security Guard Troy (ep461)
- Kurt Scholler - Steve Mehlman (ep173)
- Kwabena Darkwah - Bahir Numas (ep142)
- Kyla Drew Simmons - Greta Staley (ep265)
- Kyle Grossmeyer - Young Man (ep373)
- Laird Macintosh - Corporal Stinson (ep28)
- Laith Wallschleger - Erik Nilsson (ep438)
- LaJessie Smith - Lamar (ep253)
- Lana McKissack - Edie Samples (ep357)
- Landon Ashworth - Glen Collins (ep353)
- Lane Compton - Trevor Barth (ep350)
- Larry Myo Leong - Sailor #2 (ep462)
- Laura P. Vega - Maria (ep78)
- Lauren Bray - Makaela Hayes (ep289)
- Lauren Rose Lewis - FBI Assistant (ep118)
- Lauren Sanchez - NCIS Agent Sanchez (ep155)
- Lauren Shiohama - Taylor (ep150)
- Layla Golfieri - Tali (ep389)
- Lazarus Jackson - Falls Church Police Officer (ep299)
- Leah Grosjean - Ashley Watts (ep446)
- Lee Broda - Afghani Mother (ep228)
- LeRome R. Mendheim - Rome Derramado (ep322)
- Liisa Cohen - Nurse (ep133)
- Liisa Evastina - Young Russian Woman (eps135-136)
- Linsay Rousseau - M.P.D. Cop (ep397)
- Lisa Chamberlain - Young Annie Downing (ep394)
- Lisa Costanza - Landlord (ep450)
- Lisa Dring - Telemarketer #2 (ep361)
- Lisa Maley - Anna Ventura (ep366)
- Liz Benoit - Scholarly Woman 2 (ep376)
- Lorey Hayes - Teta Gayflor (ep328)
- Lou Richards - Minister (ep258)
- Louis Iacoviello - Curtis Ranier/James Meyers (ep120)
- Lu Patterson - Ballerina #2 (ep143)
- Lucy Davenport - Maria (ep228)
- Ludo Vika - Sister Lucita (ep330)
- Luke Colombero - Tommy Daly (ep245)
- Luke White - EMT (ep229)
- Mackenzie Firgens - Mother (ep467)
- Maggie Henry - Female Seaman Apprentice (ep208)
- Makabe Ganey - Jackson Edward (ep288)
- Malik Kirkwood - Skateboard Kid #2 (ep52)
- Mann Alfonso - Edgar Fitz (ep356)
- Manny Cartier - Marine (ep406)
- Marc Aden Gray - Navy Captain Jake Marsden (ep197)
- Marc Forget - GIGN Captain Laugier (ep460)
- Marc Senter - Pvt. Stearns (ep30)
- Marc Vahanian - William Decker (ep112)
- Marcella Lentz-Pope - Amy Bright (ep80)
- Marcus Christian - Young Chuck Winslow (ep117)
- Marcus DeAnda - Mark Davis (ep485)
- Marcus Ray - Bouncer (ep426)
- Marcus Reynaga - Paramedic (ep69)
- Marcus Terrell Smith - Wedding DJ/NCIS Agent (ep478)
- Maria Bertrand - Young Woman (ep51)
- Maria Delle Grazie - Ashley Simmons (ep43)
- Mariano Mendoza - Thug (ep206)
- Marie Oldenbourg - Erin Hill (ep309)
- Mariela Santos - Janice Santos (ep27)
- Mario Ardila Jr. - Shayne Garcon (ep397)
- Maritxell Carrero - Waitress (ep454)
- Mark Allan Stewart - Stefano Delmar (ep158)
- Mark Ciarrocchi - Rylan Marsh (ep455)
- Mark Dippolito - Sleazy Guy (ep342)
- Mark Engelhardt - Kent Marshall (eps351-352)
- Mark Fite - Walter Miller (ep371)
- Mark Griffin - Blue McGinty (ep39)
- Marlon John - PMC #2 (ep144), Guard (ep152)
- Marque Richardson II - Navy Seaman Joey Elson (ep182)
- Marsha Kramer - Old Woman (ep364)
- Martin Kildare - Mr. Sharp (ep450)
- Martin Morales - Bellman (ep206)
- Marty Dew - Daniel Vega (ep438)
- Mary Cole - Audrey the Barista (eps475, 482)
- Mary Kate Gaffney - Tanya Owens (ep384)
- Mary Margaret Lewis - Maude Simmons (ep411)
- Mary Mouser - Kelly Gibbs
- Mary Wyckliffe - Nurse Dooley (ep31)
- Maryfrances Careccia - Bailiff (ep411)
- Massi Pregoni - Kenny the Manager (ep462)
- Mat Hostetler - Mess Specialist (ep7)
- Mataeo Mingo - Lucas (ep289)
- Mathew Yanagiya - Resident Ryan Cross (ep465)
- Matt Iseman - DC Metro Officer Talbot (ep65)
- Matt Jayson - Edgar Stump (ep319)
- Matt Lasky - Robert Hill (ep367)
- Matt Miller - NCIS Special Agent Jack Patterson (ep130)
- Matt Riedy - Navy Rear Admiral Kenneth Kirkland (ep102)
- Matt Sigloch - Man (ep23)
- Matthew Atherton - Captain Starling (ep28)
- Matthew Kaminsky - Henry Spivey (ep54)
- Matthew Mahaney - FBI Agent Bruce Rivers (ep118)
- Matthew Ness - Spencer (ep31)
- Matty Castano - Eric (ep324)
- Maura Soden - Melora Koss (ep170)
- Maureen Driscoll - Mrs. Darlene Applebaum (ep481)
- Maurice Webster - Bartender (ep458)
- Maury Morgan - Marsha Jones (ep344)
- Max Bird-Ridnell - Nigel Ford (ep339)
- Maxwell Almono - John Harlan (ep448)
- Maya Latzer - Lala (ep195)
- Megan Salmans - Young Ducky's Friend (ep261)
- Megan Sheehan - Woman Who Says No (ep333)
- Melissa Greenspan - Mother (ep288)
- Melissa Lee - Sarah Fuentes (ep3)
- Melody Angel - Kinah (ep195)
- Melonie Mack - Jenny Page (ep120)
- Merik Tadros - Officer Michael Rivkin (ep114)
- Mesrop Agajanyan - Henri Rousseau (ep95)
- Mette Holt - Renata Atal (ep262)
- Mia Lee - Newscaster (ep110)
- Micah Owens - Boy Gibbs (ep258)
- Michael A. Shepperd - Mailman (ep101)
- Michael Anthony Perez - Pete the Building Manager (ep443)
- Michael Archer - Salesperson #1 (ep35)
- Michael Buonomo - Dennis Latrobe (ep240)
- Michael Canaan - MP (ep25)
- Michael Eaddy - Ricki's Father (ep223)
- Michael Edward Rose - Walter Richter (ep10)
- Michael Felix - Gary Falco (ep311)
- Michael Galante - Capt. David Landis (ep279)
- Michael Goetz - Bartender (ep20)
- Michael Guarnera - Vic Gera (ep28)
- Michael Hagiwara - Scholarly Man 1 (ep376)
- Michael J. Chen - Sailor #1 (ep462)
- Michael Lesly - Fireman #1 (ep207)
- Michael Maze - Security Guard (ep1)
- Michael McLafferty - Kyle (ep4)
- Michael Monasterio - Miguel Ortega (ep465)
- Michael Rupnow - Parker James (ep411)
- Michael Sarysz - Corporal James Travis (ep9)
- Michael Swan - Ray Vittorio (ep120)
- Michael Toland - Navy Captain Thomas Jennings (ep127)
- Michael Turner Tucker - Jerome Murray (ep364)
- Michael Villar - Burly Guy (in diner; ep319)
- Michele Panu - Kirstin Hoyle (ep310)
- Michelle Lukiman - Paramedic (ep378)
- Michelle Mulitz - Carrie (ep123)
- Michelle Pascarella - Mallory Bleeker (ep276)
- Michelle Wolff - Marine Sergeant Maria Sanchez (ep93)
- Mickey Cassidy - Masked Man (ep440)
- Mieko Hillman - Jennifer Murphy (ep73)
- Mike Bridenstine - Security Guard (ep301)
- Mike Falkow - Jim Bruno (ep308)
- Mike Kersey - Janitor Harry Cooper (ep119)
- Mike Maolucci - Clyde Sweeney (ep346)
- Mike Schiff - John Murphy (ep434)
- Mikie Beatty - Anton Vlastefin (ep316)
- Mikki Padilla - Leanne Roberts (ep52)
- Mila Brener - Kelly Gibbs (ep283)
- Miles Mendelsohn - Middle Eastern Boy #2 (ep228)
- Milo Cragnotti - Young Parker (ep467)
- Mircea Oprea - Defense Attorney for Judge (ep376)
- Mo Beatty - Payload Operator (ep391)
- Mohamed Ibrahim Elkest - Abasi Al-Masri
- Mona Patterson - Ballerina #1 (ep143)
- Monib Abhat - Security Guard #1 (ep379)
- Monica Day - Gloria (ep389)
- Monica Lawson - Nurse
- Monti Sharp - Handler (ep6)
- Morgan Peter Brown - Paul Morton (ep484)
- Morrison Keddie - Boris Popov (ep457)
- Nadia Bjorlin - Brittany/Attractive Wife (ep167)
- Najee Muhammad - Street (ep419)
- Nancy Daly - Claire Raider (ep461)
- Natalie Denise Sperl - Milaana Shishani (ep114)
- Natasha Blasick - Elena Dovhal (ep426)
- Nathan Ray Clark - NCIS Special Agent Piotter/Priest (ep478)
- Nathaniel Best - REACT Leader (ep484)
- Nayo Wallace - Doctor (ep324)
- Neal Kodinsky - Viktor (ep403)
- Nefetari Spencer - Realtor (ep284)
- Nell Teare - Young Woman (ep236)
- Nick Alvarez - Jonny (ep356)
- Nick Cardiff - Jason Samuels AKA Sketchy Guy (ep433)
- Nick Jaine - Jason Patel (ep19)
- Nick McDow - Javid (ep126)
- Nick Niven - Tyler Hammond (ep161)
- Nick Warnock - Marine Staff Sgt. (ep24)
- Nicholas James - Navy Seaman Derek Balfour (ep182)
- Nico Greetham - Tommy Larson (ep375)
- Nicola Lambo - Amanda Graham (ep353)
- Nicola Posener - Maxine "Max" Lautner (ep439)
- Nicolas Hedges - 80s Kid (ep375)
- Nicole Pettis - Haley (ep253)
- Nicole Rainteau - Kaytlynn (ep446)
- Nika Williams - Sapphire (ep184)
- Nikita Teterev - Armed Men Leader (ep485)
- Nikka Far - Elina (ep238)
- Nikki Leigh - Woman (ep293)
- Nikki McCauley - Melanie Stafford (ep418)
- Nima Jafari - Tahir (ep406)
- Nita Mistry - Doctor Angela Novak (ep428)
- Noah Staggs - AA Member (ep402)
- Noble Tabibian - Middle Eastern Boy #1 (ep228)
- Noel Arthur - Ramses (ep290)
- Nohely Quiroz - Carla (ep416)
- Nolan Freeman - Willie (ep379)
- Noree Victoria - Maid of Honor (ep219)
- Noreen O'Neill - Audrey (ep383)
- Norman Lehnert - Greg Patrick Walsh (ep439)
- Oleg Zatsepin - Sal Balducci (ep28)
- Olivia Dudek - Delilah Santos (ep342)
- Olivia Negron - Abuela (ep454)
- Omono Okojie - Bahar Tambai (ep290)
- Oren Skoog - Fanny-Packed Tourist (ep382)
- Oscar Gary Jr. - Thomas Miller (ep431)
- P.J. Johal - Doctor (ep417)
- Pablo Espinosa - Arena Security Guard (ep321)
- Paloma Rabinov - Sober Sally (ep335)
- Pamela Shaddock - Nurse (ep156)
- Paolo Andino - Arthur (ep409)
- Paris Benjamin - Mor (ep238)
- Pat Harvey - ZNN Reporter (eps291, 317)
- Patric Knutsson - Hear (ep143)
- Patrick Day - Phil Iverson (ep363)
- Patrick Faucette - Security Guard (ep208)
- Patrick Macmanus - Seaman Apprentice Sparks (ep11)
- Patrick Quinlan - London Bobby (ep293)
- Patrick Robert Smith - Tim Gerber (ep91)
- Patrick Wolff - Hood #2 (ep136)
- Paul A. Magers - Newscaster (ep270)
- Paul Conkling - Hunter (ep172)
- Paul Edney - US Navy Family Member (ep310)
- Paul Gregory - Senator McCormick (ep380)
- Paul Holowaty - MI6 Officer (ep304)
- Paul Vinson - Biker (ep8)
- Paul Webster - Lt. Commander Alex Tanner (ep53)
- Payton Spencer - Emily Fornell (eps72, 94)
- Peg Shirley - Mature Woman (ep386)
- Penny Peyser - Judge Susan Delphy (ep337)
- Peter Downing - Captain (ep240)
- Peter Gannon - Bartender (ep120)
- Peter Jang - James Willis (ep344)
- Peter Mendoza - Suspicious Rebel (ep331)
- Pezh Maan - Hassan Sayegh (ep412)
- Phil Abrams - Hotel Manager (ep10)
- Phil Idrissi - Big Lou (ep389)
- Philip Lenkowsky - Squeegee Man (ep106)
- Philippe Brenninkmeyer - Dapper Don/Alberto Velez (ep267)
- Phillip Fallon - Young Travis Phelps (ep272)
- Pilar Holland - Lucia Campbell (ep307)
- Presciliana Esparolini - Deputy (ep273)
- Pressly Coker - Leonard Jones (ep263)
- Prestin Persson - Beth (ep178)
- Preston Butler III - Kendle Spotnitz (ep409)
- Preston Greyson Thompson - Laser Tag Kid (ep179)
- R.C. Ormond - Dorian Hobart (ep264)
- Rahvaunia - Fire Captain (ep447)
- Rainey Spurlock - Harper (ep385)
- Ralph Michael Brekan - Rufus Simms (ep293)
- Ramsey Thoms - Evan Cross (ep476)
- Randy Evans - Ambulance Driver (ep159)
- Randy Flagler - Gibbs' C.O. (ep69)
- Rane Jameson - Pajama Hipster (ep267)
- Ravi Naidu - Doctor (ep317)
- Rayna Tharani - Mary Roberts (ep165)
- Reatha Grey - Marion (ep387)
- Rebekah Galvan - Best Friend (ep218)
- Reed Rudy - Air Transport Officer (ep7)
- Reginald James - LAPD Detective Monroe (ep112)
- Richard Anthony Crenna - Chief Steward (ep1)
- Richard Augustine - Janitor (ep19)
- Richard Gleason - Dr. Robert Banks (ep202)
- Richard Wharton - Squeegee Man (ep309)
- Richie Rosales - John Warren (ep386)
- Rick Deats - Navy Admiral John McGee (ep268)
- Rick Gifford - State Dept. Special Agent Smith (ep456)
- Rick Segall - Randy Daly (ep311)
- Rick Sparks - Seaman Fred Randall (ep61)
- Rico Anderson - Rick Samson (ep80)
- Rico Rodriguez - Travis Buckley (ep132)
- Rigo Sanchez - Boyfriend (ep6)
- Riley Thomas Stewart - Fred Miller (ep201)
- Rita Angel Taylor - Young Lucia Torres (ep458)
- Rob James - Guard (ep419)
- Rob Locke - Viktor Lopuchin (ep339)
- Rob Luke - P.A. (ep34)
- Rob Norton - Young Jackson Gibbs (ep258)
- Robert Almodovar - Group Leader (ep463)
- Robert Arbogast - FBI Special Agent Wentworth (ep108)
- Robert Floyd - Police Officer (ep20)
- Robert Manning Jr. - Officer Alex Taylor (ep42)
- Robert Ochoa - Boy (ep167)
- Robert Reinis - Drew Paragon (ep76)
- Robert Sloan - Tobey Abbott (ep208)
- Roberto Sanchez - José (ep115)
- Roberts Jekabsons - Bodyguard Yuri (ep392)
- Rod Keller - Marty Hagen (ep228)
- Roger Ranney - Elevator Repairman (eps146-147)
- Roland Ruiz - Kenny (ep389)
- Roman Arabia - Volunteer (ep448)
- Rome Stephens Singh - Afghan MP #1 (ep424)
- Romeo Fabian - Other Rebel (ep331)
- Ron Baker - Major Craig Peary (ep9)
- Ron Bottitta - Captain Jamison (ep166)
- Roopashree Jeevaji - Doctor (ep373)
- Roshawn Franklin - Crew Chief Rogers (ep100)
- Roxann Lovseth - Upscale Hotel Guest (ep218), Faith's Mother (ep364)
- Roy Jackson - Bartender (ep182)
- Rueben Grundy - Philadelphia P.D. Detective Dubrow (ep429)
- Rufino Romero - Nurse (ep450)
- Ruman Kazi - Merchant #1 (ep282)
- Rupert Reid - Noah Daniels (ep230)
- Russell Nauman - Cameron Mann (ep320)
- Russell Pitts - Judd Norwood (ep221)
- Ruth Zalduondo - Angela Meyers (ep64)
- Ryan Caltagirone - Navy Seaman Karl Wachter (ep161)
- Ryan Culver - Navy Lt. Curtis Janssen (ep46)
- Ryan Locke - Roland Ames (ep221)
- Ryan McCann - Fmr. 1st Lt. Mayne (aka Christian Wells; ep155)
- Ryan Radis - Andrew Lewis (ep335)
- S. Zylan Brooks - Catherine Scott (ep336)
- S.E. Perry - Yale Peyton (ep180)
- Sade Devine - Jasmine Tyler (ep399)
- Sadie Calvano - Rebecca Mason (ep164)
- Salman Bokhari - Young Afghani Man (ep126)
- Salvador Chacon - Guard (ep331)
- Sam Asghari - Security Guard Russell (ep388)
- Sam Schuder - Kelly Gibbs (ep200)
- Samantha Bailey - Little Angel (ep94)
- Samantha Boscarino - Mary LaFleur (ep266)
- Samantha Colburn - Bridget O'Leary (ep325)
- Samantha Klein - Nurse (ep109)
- Samantha Sergeant - Ashley (ep150)
- Sammy Sheik - Iraqi Militia Guard at Road Block (ep109)
- Samrat Chakrabarti - Jenner Blye (ep294)
- Sandra Cevallos - Monica Perez (ep411)
- Sandra Mitchell - ZNN Reporter (ep258)
- Sandra Nelson - Jessica Terdei (ep305)
- Sandra Rosko - Waitress (ep334)
- Sanjay Chandani - Surgeon (ep260)
- Sara Emami - Darya (ep406)
- Sara Sanderson - Tiffany (ep116)
- Sarah Butler - Nicole (ep339)
- Sarah Campbell - College-Aged Girl (ep160)
- Sarah Chaney - DIA Agent Collins (ep426)
- Sarah Edwards - Nurse Samantha (ep177)
- Sarah Hudson - Theresa Wade (ep206)
- Sarah Jane MacKay - Rose (ep290)
- Sarah Khasrovi - Patty (ep417)
- Sarah Lewis - I.C.U. Doctor (ep155)
- Schuyler Yancey - Petty Officer Christopher Muñoz (ep96)
- Scott Checansky - Milos Suskavcevic (ep111)
- Scott Menville - Donald "Donny" Pretorius (ep382)
- Scott Michael Morgan - Deputy Reed (ep273)
- Scott Miles - Pvt. Bellows (ep30)
- Scott Peat - Mitchell Grafton (ep299)
- Scott Roe - Marine (ep292)
- Scott Tracy Griffin - Brian Haber (ep229)
- Sean Ryan Fox - Dave (ep198)
- Sean Samuels - Buyer #1 (ep432)
- Sean Thomas Bunch - Marine Major John Maguire (ep83)
- Selah Victor - Susan (ep459)
- Selina Kaye - Phyllis (ep397)
- Sergio Enrique - Marine (ep266)
- Sewell Whitney - Nicholas Mallard (I; ep293)
- Shamori Washington - Theo Carter (ep351)
- Shani Atias - Renne (ep238)
- Shannon McClung - Boltcutter (ep201)
- Shaun Clay - Albert Dale (ep346)
- Shawn Hazz McDonald - Crime Lab Tech (ep213)
- Shea Vaughan-Gabor - Jen (ep370)
- Sheila E. Frazier - ZNN Reporter Debra Green
- Shel Bailey - Big Bouncer (ep361)
- Shirley Jordan - Mary Tyler (ep399)
- Sibila Vargas - ZNN Reporter Samantha Tate (ep190)
- Sienna Ribeiro - Grace (ep483)
- Sky Soleil - Bill (ep94)
- Sofia Mattsson - Jessica (ep232)
- Sofie Calderon - Joan (ep398)
- Sonny Surowiec - C.K. Cord (ep54)
- Stan Ivar - Ben Robinson (ep171)
- Stephanie Cleough - Kelly Larson (ep410)
- Stephanie Escajeda - Natalia (ep160)
- Stephanie Mello - NCIS Tech (ep49)
- Stephanie Y. Wang - Emily Shaw (ep311)
- Stephen Jared - David (ep353)
- Stephen O'Mahoney - CEO Paul Newhope (ep434)
- Steve Tom - George Ashley Green (ep365)
- Steven Christopher Parker - Passing Player (ep178)
- Steven Kekoa Shelby - Goon (ep473)
- Steven M. Gagnon - CIA Director Roger Kirkwood (ep137)
- Stevens Gaston - Young Jeff Ross (ep140)
- Stuart McLean - Malcolm Turro (ep292)
- Sufian Kassam - Merchant #2 (ep282)
- Susan Angelo - Mrs. Norton Padgett (ep363)
- Susan Louise O'Connor - Woman in Cat Sweater (ep395)
- Susan Spano - Marie Markin (ep239)
- Suzanne Rico - Suzanne McRobert (ep29), Reporter (ep65)
- Swati Kapila - CEO Tamara Hamilton (ep463)
- Sydney Agudong - Kelly (ep450)
- Sylvia Kwan - Gwen Eisley (ep357)
- Tabitha Brownstone - Lauren Jacobs (ep473)
- Tabitha Morella - Teenage American Girl (ep282)
- Tacey Adams - Grandma Avatar (ep463)
- Tai White - Poacher (ep328)
- TaiVon McKinney - Tammy Gantry (ep389)
- Taj Speights - JaVale Brown (ep310)
- Tamara Belous - Sofia Glazman (ep262)
- Tammi Mac - Janice (ep467)
- Tanner Blaze Whitlock - Tommy Page (ep120)
- Tanner Davis - Joey (ep483)
- Tanya Leon - Marinka Bazarov (ep385)
- Tarina Pouncy - Capt. Anne Crenshaw (ep430)
- Taryn Kelly - Navy Lieutenant Sara Giles (ep443)
- Taryn O'Neill - Assistant (ep56)
- Tatiana Chekhova - Reena Deesie (ep287)
- Tatiana Turan - Supervisor (ep388)
- Tatum Shank - Ted (ep385)
- Taylor Bracken - PO3 Sally Jordan (ep431)
- Ted Baker - Joe Baker (ep220)
- Teddy Saunders - Young Man (ep177)
- Teo Olivares - Speak (ep143)
- Terence J. Rotolo - Bannon (ep434)
- Terrell Ransom Jr. - Parker Daly (ep354)
- Terry Woodberry - Bates (ep183)
- Tess Elliot - Morgan Burke (ep367)
- Tessa Munro - Travis' Mom (ep132)
- Thea Rose - Chrissy Wayne (ep61)
- Thomas Blake - Young Ed Gantry (ep117)
- Thomas McNamara - Pilot #1 (ep424)
- Thomas Owen - Brian Duane Roberts (ep114)
- Thomas Rosales Jr. - Pedro Hernandez (ep200)
- Tiago Martinez Castillo - 5-Year-Old Boy (ep410)
- Tiffany Daniels - Renée Turner (ep322)
- Tiffany Dion - Eye-Roll Girl (ep439)
- Tiffany Espensen - Amanda Lee (ep122)
- Tim Barraco - Service Technician (ep44), Coal Miner (ep117)
- Tim Chiou - Petty Officer Kevin Lim (ep126)
- Tim Fox - Toby Withers (ep413)
- Tim Neff - Goon 2 (ep473)
- Tim Rock - FLETC Instructor Cambria (ep445)
- Tim Scanlon - Target Range Master (ep326)
- Tim Soergel - Manny (ep449)
- Time Winters - Scholarly Man 2 (ep376)
- Timm Perry - Young Alan Sandich (ep140)
- Timothy Hornor - Ian (ep391)
- Timothy-James Kennedy - Skater Dude (ep454)
- Tina D'Marco - Parisian Woman (ep460)
- Tiwana Floyd - Paula (ep282)
- Todd Anthony - Connor Reese (ep360)
- Todd Bosley - FBI Tech (ep471)
- Tom Billett - Viggo Trellis (ep293)
- Tom Lind - Tom Ventura (ep201)
- Toni French - London Pub Patron - 1973 (ep293)
- Tony Becker - Policeman (ep429)
- Tony Christopher - Seaman (ep208)
- Tony Daly - Marine Captain John Rankin (ep109)
- Tony Devon - Lorne Carter (ep218)
- Tonya Cornelisse - Kayla Vacari (ep125)
- Tavis Danz - Marine PFC Marco Riggs (ep134)
- Toby Meuli - Private Jones (ep169)
- Trav Lyons - Kyle Travers (ep252)
- Travis Joe Dixon - Leland Wiley (ep203)
- Travis Schuldt - Freddie Martin (ep473)
- Trey Carter - University PD (ep295)
- Tripp Pickell - Petty Officer Pete Bidwell (ep107)
- Tristan Cunningham - Nurse Janeway (ep413)
- Tristen MacDonald - Nurse Davies (ep171)
- Troian Bellisario - Sarah McGee (ep43)
- Troy Brenna - Kidnapper (ep122)
- Troy Vincent - Lawyer (ep417)
- Troy Waters - Ferry Boat Captain (ep208)
- Tudor Munteanu - Ivan (ep403)
- Ty Upshaw - Security Guard (ep45)
- Tyler Jacob Moore - Richie Rose (ep111)
- Tyler Lueck - Man Who Proposes (ep333)
- Tyler Parks - Gordon Cooper (ep346)
- Tyler Perez - Sam Vega (ep450)
- Tyler Wolfe - Terence Keith (ep237)
- Val Garrahan - Danna Calley (ep429)
- Vanessa E. Garcia - Patrice Gates (ep246)
- Vaz Andreas - Dimitri (ep259)
- Vera Miao - Pamela Cook
- Vera Portugues - Tali (ep388)
- Vern Urich - Nervous Man (ep51)
- Victor Bonavida - Zack (ep9)
- Victor William Chen - Chinese Man (ep462)
- Virginia Reece - Allison Donovan (ep40)
- Virginia Watson - Nurse Ruth Corruthers (ep155)
- VJ Kesh - Unhoused Man (ep483)
- Vonzell Carter - Instructor (ep441)
- Wade Harlan - Marine Cadence Leader (ep194)
- Walid Amini - Marine Lance Corporal Abdul Bakr (ep105)
- Walter Wong - Civilian Crewman #2 (ep100)
- Ward Roberts - Pilot (ep115)
- Warren Sweeney - Priest (ep446)
- Webster Williams - Colonel Jasper Shepard (eps94-95)
- Wes McGee - Andrew Wells (ep239)
- Wida Karim - Mrs. Jamaah (ep452)
- Will Buchanan - Ron Flegman (ep244)
- Will Deutsch - Smaller Guy (ep201)
- Will Finley - Adam Neil (ep360)
- Willem van der Vegt - Edward Kraus (ep231)
- Willie Earl Jr. - Elvin Gates (ep481)
- Wolf Amer - Iraqi Militia Guard at Shed (ep109)
- Yan Feldman - Walid Abbas (ep150)
- Yennifer Behrens - Marta Jiménez (ep415)
- Yolanda Snowball - Meeting Secretary (ep335)
- Yvette Cason - Maureen (ep389)
- Yvonne Zima - Lana (ep478)
- Zac Pullam - Mitch (ep356)
- Zach Lewis - NCIS Mailroom Clerk Roy (ep130)
- Zadran Wali - Imam Musa Ibn Hasan (ep270)
- Zakk Moore - Potential Recruit (ep13)
- Zeb Sanders - Dwight (ep289)
- Zeke Alton - Detective (ep469)
- Zoey Diaz - Amira (ep238)
- Zoli Dora - Ramzi Ashor (ep170)