All 183 actors in both JAG and NCIS
183 actors have appeared in both JAG and NCIS, across 735 episodes. The most-credited is Alan Dale, Tom Morrow in JAG and Tom Morrow in NCIS.
| Actor | In JAG | In NCIS | Eps | Eps |
|---|---|---|---|---|
| Alan Dale | Tom Morrow | Tom Morrow | 2 | 16 |
| Michael Bellisario | Midshipman Third Class Michael "Mikey" Roberts, USNA, Antonio, P.O. Mike 'Mikey' Roberts | Charles Sterling | 7 | 4 |
| Sean Murray | Danny Walden | Special Agent Timothy "Tim" McGee | 3 | 8 |
| Zoe McLellan | Legalman First Class (LN1) Jennifer "Jen" Coates, USN | Special Agent Meredith "Merri" Brody | 8 | 3 |
| A.J. Tannen | Lt. Alfred Aldridge | Mossad Agent, Grant Lancaster | 6 | 3 |
| Rif Hutton | LCDR Alan Mattoni | Marine General Phillip Braxton | 7 | 2 |
| Steven Culp | Special Agent Clayton Webb | Navy Cmdr. William Skinner | 8 | 1 |
| Patrick Labyorteaux | Captain Bud J. Roberts Jr., USN | JAG Navy Captain Bud Roberts, Jr., Olev Kozlov | 4 | 3 |
| Isabella Hofmann | Meredith Cavanaugh | Judge Evelyn Wallace, Kate Reynolds | 4 | 2 |
| Tim Kelleher | Lt. Moore | NCIS Special Agent Christopher "Chris" Pacci | 1 | 5 |
| Anne-Marie Johnson | Rep. Bobbi Latham | Marine Col. Stacey Radcliffe, Senator Selena Grayson | 3 | 2 |
| John DeMita | Col. Clifford Blakely | Navy Admiral Jorge Morales | 4 | 1 |
| John Finn | Major Klein | Marine Commandant Charles T. Ellison | 1 | 3 |
| John M. Jackson | Rear Admiral A.J. Chegwidden, USN | Rear Admiral A.J. Chegwidden | 3 | 1 |
| Michael O'Neill | Major General Harold Rossing | Former NCIS Special Agent Riley McCallister | 1 | 3 |
| Ben Murphy | Capt. Neilsen, Lt. Col. John Farrow | Capt. Veitch | 2 | 1 |
| Daphne Ashbrook | Annie Pendry | Donna Peyton | 2 | 1 |
| James Morrison | Major General Lucas West | CIA Assistant Director Jonathan Overmeier, U.S. Senator John Phillips | 1 | 2 |
| Karri Turner | Lieutenant Harriet Sims-Roberts, USN | Micki Kaydar | 1 | 2 |
| Michael Weatherly | Special Agent Anthony "Tony" DiNozzo | Special Agent Anthony "Tony" DiNozzo | 2 | 1 |
| Peter Jason | Randy Hamill | Marine Sergeant Major Robert King | 1 | 2 |
| Randy Vasquez | Gunnery Sergeant Victor Galindez, USMC | ATF Special Agent Philip Caffey, NCIS Agent Roger Voight | 1 | 2 |
| Robert Pine | Capt. Childs | Congressman Theodore Randolph, Golfer Ben | 1 | 2 |
| Terry O'Quinn | Rear Admiral Thomas "CAG" Boone, USN | Colonel Will Ryan | 2 | 1 |
| Adria Tennor | Laurie June | Angela Dresser | 3 | 1 |
| Al Sapienza | PO Ralph Carlos | Maurice Riva, Cmdr. William Foley | 1 | 3 |
| Bruce Davison | Dr. Morris Sperling | Lester Burm | 1 | 1 |
| Clyde Kusatsu | Senator Theodore Fujiwara, Capt. Morimoto | Benjamin Franklin, Mister Takumi Rin | 2 | 2 |
| Daniel Mandehr | Mr. Yates | Officer Adler | 1 | 1 |
| David Andrews | Major General Gordon "Biff" Cresswell, USMC | U.S. Secretary of Defense Errol Coyne | 1 | 1 |
| John Wesley | Darren Oakley | Chaplain Samuel Kemp | 1 | 1 |
| Michelle Wolff | Air Controller | Marine Srgt. Maria Sanchez | 1 | 1 |
| Ray Wise | Congressman Marvin Bolton | Wayne Tobett | 1 | 1 |
| Sterling K. Brown | Sgt. Harry Smith | Elijah Banner | 1 | 1 |
| Wade Williams | Sheriff Brad Driskell | Larry Purcell | 1 | 1 |
| William R. Moses | Cmdr. Dorning | Edison Geary | 1 | 1 |
| Scott Paulin | CAPT Johnson | Navy Capt. Kevin Dorn | 4 | 1 |
| Andrew Hawkes | Dale Woodley | Dean Campbell | 1 | 2 |
| Bernard White | Sadik Fahd | Afghani Ambassador Qasim Saydia | 2 | 1 |
| Matthew Glave | LT Jack "Ripper" Carter | Navy Commander John McGee | 2 | 1 |
| Sal Landi | Captain Archambault, SGT Riske | Bill Zaprowski, Cmdr. Stovic | 2 | 2 |
| Adam Baldwin | CDR Michael Rainer | Cdr. Rainer | 1 | 1 |
| Brynn Thayer | Sylvia Hanratty | Adams County Sheriff's Department Sheriff Mary Talbot | 1 | 1 |
| Darin Cooper | Young CAG, Young Lt. Tom Boone | Roy Evans | 2 | 1 |
| David Marciano | Senior Chief Sinclair | Bartender | 1 | 1 |
| Del Zamora | Capitan Jose Molina | Sergio Morales | 2 | 1 |
| Dennis Cockrum | Vic Velasco | NSA Tech, Senator | 1 | 2 |
| Erick Avari | Sheik Shuhaib Al-Hassan | Col. Dan McClafferty | 1 | 1 |
| Glenn Morshower | CPO Ned Bannon, Capt. French | Cmdr. Robert Peters | 3 | 1 |
| John Getz | Adm. Harrison Spencer | Walter Kane | 1 | 1 |
| Ken Lerner | James Reid | Albert Hencheck | 1 | 1 |
| Lochlyn Munro | LT Andrew "X-Man" Buxton | Kevin Holt | 1 | 1 |
| Matt Battaglia | Lt. Alexander Kellogg | P.O. Porcaro | 1 | 1 |
| Matt Winston | Ron Katz | Rick Carvell | 1 | 1 |
| Patrick St. Esprit | CAG - USS Patrick Henry | Navy Commander Weidman | 1 | 1 |
| Spencer Garrett | First Lieutenant Vince Boone | Commander Spenser | 1 | 1 |
| Stephanie Niznik | Lt. 'Hobo' Green | Sharon Bellows | 1 | 1 |
| Steve Valentine | Prof. Pilkington | Miles Wolf | 1 | 1 |
| Tracy Middendorf | Mariel Reese | Tara Bick | 1 | 1 |
| Vernée Watson | Annette Dunwoody | Miss Helen Frimkes | 1 | 1 |
| Francesco Quinn | Kabir Atef | Gunnery Sgt. Alvarez, Luis Romero | 2 | 2 |
| Ilia Volok | Maj. Nikolai | Burly Man, Kostya Valkov | 2 | 2 |
| Alex Fernandez | Joe Epps | Joseph Flores | 1 | 2 |
| Jack Stehlin | Edward Hardy | Navy Cmdr. Harry Wilder | 2 | 1 |
| John D'Aquino | Stuart Dunston | Ken Ashmore | 2 | 1 |
| Steve Rankin | Admiral Mark Tucci, Lieutenant Stans | Sgt. Bill Atlas | 2 | 1 |
| Vladimir Skomarovsky | Col. Mikhail Parlovsky | Colonel-General Dimitri Borov | 2 | 1 |
| Alex Carter | CDR Thomas Risnicki | Knox Elicott | 1 | 1 |
| Blue Deckert | Agent Matlovich | Federal Marshal | 1 | 1 |
| Chris Ellis | Detective Kush | Gunnery Sgt. John Deluca | 1 | 1 |
| Christopher Wiehl | Sgt. Barnes | Ramsay Witman A.K.A. John Joseph Manning | 1 | 1 |
| Conor O'Farrell | Gen. Nathan Behnke | William Danforth | 1 | 1 |
| Daniel Zacapa | Bernardo | Detective Martin Alonzo | 1 | 1 |
| Dave Florek | Stan Coffie | Virgil McKeever | 1 | 1 |
| Eric Lange | Brad Weston | William Lafferty | 1 | 1 |
| Frank John Hughes | Lt. Bouchard | Enis Watley | 1 | 1 |
| Geoffrey Lower | CDR Donald Pulone | Navy Cmdr. Robert Morris | 1 | 1 |
| Jason Beghe | Sgt. Maj. Thomas Elgart Ret. | Blake Martin | 1 | 1 |
| Kari Coleman | Marcy Katz | Maggie Scott | 1 | 1 |
| Kevin Alejandro | Corporal Jude Dominick | Jaime Jones | 1 | 1 |
| Mark Sheppard | Deputy Director of Air Operations / Young Evan Parker | Young Mr. Pain | 1 | 1 |
| Michael Chieffo | Forensics Specialist | Randy Devereaux | 1 | 1 |
| Nestor Serrano | Captain Berroa | NSA Supervisor Jeremy Marlens | 1 | 1 |
| Phil Morris | Captain Max Engler | Navy Capt. Paul Martino | 1 | 1 |
| Shaun Toub | Prison Commandant | Khalid Mohammed Bakr | 1 | 1 |
| Stephen Mendel | Col. Tretyakov | Retired NCIS Special Agent Fred Pettis | 1 | 1 |
| Tim Lounibos | Lt. Peter Yuen | Det. Paul Atwood | 1 | 1 |
| Benjamin Brown | Radar Controller, Stiles | Marine Capt. Arvidas | 2 | 1 |
| Bruce Nozick | Seth Maat | Harvey Grossman, Lacy | 1 | 2 |
| Michael Canavan | Admiral Elias, CAPT Winston | Retired Navy Admiral Thomas Garscott | 2 | 1 |
| Scott Williamson | Larry Kaliski | Virginia Governor Charles Norin | 2 | 1 |
| William Allen Young | Henry Kale | FBI Director Barry Hutchins, U.S. Secretary of Defense Moses McClaine | 1 | 2 |
| Adam Clark | Sgt. Munson | Fred Johnson | 1 | 1 |
| Betsy Brandt | Leslie Rosenbaum | P.O. Barbara Swain | 1 | 1 |
| Blayne Weaver | Private First Class Douglas | P.O. Darell Baum | 1 | 1 |
| Brad Hawkins | Petty Officer Rowe, tbd | Aaron Barnes | 2 | 1 |
| Brent Huff | Col. Howard Pergament | Rig Foreman | 1 | 1 |
| Christopher Darga | COB | Skip Harris | 1 | 1 |
| David Carpenter | Joe Osborne | Henry Hoss | 1 | 1 |
| François Chau | Kin Ku | Henry Deng | 1 | 1 |
| Jade Carter | Sergei Zhukov | Marine Capt. Daniel Wise | 2 | 1 |
| Joe Sabatino | Mark Borini | HRT Leader Horowitz | 1 | 2 |
| Larry Poindexter | Dalton Lowne | Dr. Berman | 1 | 1 |
| Larry Sullivan | CPO Roger Pearson | Flight Surgeon | 1 | 1 |
| Lawrence Monoson | Detective Axelrad | Adam O'Neill | 1 | 1 |
| Matt Sigloch | GySgt Cahill, MSgt. Lochsig, Seahawk Crewman | Man | 4 | 1 |
| Paul Perri | Dr. Chataway | Man | 2 | 1 |
| Rick Hall | Air Boss | Larry Lawrence | 2 | 1 |
| Tom Schanley | CDR Winter | Navy Lieutenant Dean Massey | 1 | 1 |
| William Gregory Lee | LT Andrew Wick | Metro Police Sgt. Keith Archer | 1 | 1 |
| Indira G. Wilson | Technician | CIA Deputy Director Westin, FBI Agent Patricia Filsk | 1 | 2 |
| Alexandra Bokyun Chun | Solla Jong | Phyllis Wu | 1 | 1 |
| Ali Hillis | Rachel Hanna | Antonia Morello | 1 | 1 |
| Alyson Reed | Fran Glass | Monica Keogh | 1 | 1 |
| Andrea Grano | Corporal Barry | Navy Commander Eleadora Rey | 1 | 1 |
| Beverly Leech | Hearing Examiner | Vice Admiral Janet Kleibor | 1 | 1 |
| Christopher Stapleton | Lt. Boris Foteyev | Lt. Wade | 1 | 1 |
| Donnie Jeffcoat | Navy Commander | Navy Seaman Tom Jennings | 1 | 1 |
| Jacobi Wynne | PO Jack Furia | Mark Cohen | 1 | 1 |
| Jason Brooks | First Lieutenant John Ditullio | Marine Major Danny O'Donnell | 1 | 1 |
| Jesse Garcia | Commander Sloan | Marine Private First Class Tomas Tamayo | 1 | 1 |
| Kerrie Keane | Commander Lucy Maron | Maggie Reed | 1 | 1 |
| Larry Bagby | Young Harry Drax | Craig Wilson | 1 | 1 |
| Lou Beatty, Jr. | Captain Imhoff | Issac Curtis | 1 | 1 |
| Michael Hagerty | Petty Officer Canton | Andy Hoffman | 1 | 1 |
| Michael Whaley | Detective Carlton | Detective J.D. Morris | 1 | 1 |
| Mo Gallini | Mustafa Al-Jimri | Andre Jones | 1 | 1 |
| Natalija Nogulich | Diamond Saleswoman | Judge Maddox | 1 | 1 |
| Philip Anthony-Rodriguez | Gunnery Sergeant Mark Burrell | Former Marine LCPL Lloyd Jackson | 1 | 1 |
| Sam Witwer | Beasley | S Sgt. Rafael | 1 | 1 |
| Sean McGowan | PO2 Russ Foyle | Lieutenant Wallace | 1 | 1 |
| Sondra Currie | Angela Ritter | Lillian Hencheck | 1 | 1 |
| Steven Flynn | Chaplain Oliver Stephens | Roman Sobchek | 1 | 1 |
| Todd Kimsey | Chief Boatswain's Mate, Commander Crozier | Police Capt. Grant | 2 | 1 |
| Andi Carnick | Marcy Reynolds | Penny Block | 1 | 1 |
| Andrew Caple-Shaw | Private Krohn | P.O. Jerry Smith | 1 | 1 |
| Bobby Hosea | CPO Shipps | Navy Captain Austin Sears | 1 | 1 |
| Brady Smith | CPO Reese | David Cross | 1 | 1 |
| David Dean Bottrell | McKissick | Assistant Director of Operations Donald Linder | 1 | 1 |
| Douglas Spain | PO Lewis Cumpeano | Ceasar Bernal | 1 | 1 |
| Edward Edwards | Captain Ruggiero | Congressman | 1 | 1 |
| Ivar Brogger | Commander Brent Tranic | Simon Katz | 1 | 1 |
| Kent Faulcon | LCpl Sheets | Cmdr. Reynolds | 1 | 1 |
| Kurt Caceres | LT Frank Grady | Marine Staff Sergeant Vincente Medina | 1 | 1 |
| Leon Russom | Lt. General Anthony Manzarek | Grandpa | 1 | 1 |
| Marcelo Tubert | Admiral Picato | Nazar Boulos | 1 | 1 |
| Ryan Cutrona | General Piper | Ray Beringer | 1 | 1 |
| Shane Conrad | Cpl. Drongo | Navy Lt. Dean Westfall | 1 | 1 |
| Shashawnee Hall | Corporal Green | Police Chief Walen | 1 | 1 |
| Shaw Jones | PO Watson | Navy Commander George Campbell | 1 | 1 |
| Tom Wright | Commander Simon Harriman | Warden Sam Kelleher | 1 | 1 |
| William Morgan Sheppard | Maj. Viktor Lushov | Marcin Jerek | 1 | 1 |
| Yeniffer Behrens | Mysterious Woman | Marta Jimenez | 1 | 1 |
| Alexa Fischer | Inez Elgin | Navy Commander Jennifer Wade | 1 | 1 |
| Brian George | The Director | Dr. Ameen Temani | 1 | 1 |
| Chelcie Ross | Dr. Mallory | Josef Hanlon | 1 | 1 |
| Cory Tucker | Helmsman | Brendan | 1 | 1 |
| D. Elliot Woods | FBI Agent | Detective Bradley | 1 | 1 |
| David Barrera | Lt. Archuleta | Charlie Milla | 1 | 1 |
| David O'Donnell | Petty Officer Riggs | Jeb | 1 | 1 |
| Eric Steinberg | Tony Yoshigawa | Marcos Siazon | 1 | 1 |
| Geoffrey Rivas | Hector Valdez | Ricardo Guzman | 1 | 1 |
| Isait De La Fuente | tbd | Navy Petty Officer First Class Lucas Moniz | 1 | 1 |
| Jodi Bianca Wise | Carla Robinson | Jenny | 1 | 1 |
| John Eric Bentley | MCPO Calloway | Captain Arthur Caldwell | 1 | 1 |
| John Livingston | tbd | Will Pritchard | 1 | 1 |
| Shaun Duke | Yousif Al-Mutawaf | Azid Abu Selom | 1 | 1 |
| Dan O'Connor | Lt. Harris | Pete Shaw | 1 | 1 |
| Gina Gallego | Cuban Interpreter | Judge Monica Fernandez | 1 | 1 |
| Mailon Rivera | Chili | Navy Commander Scott Bitterman | 1 | 1 |
| Naz Deravian | Aneesa | Mosuma Daoub | 1 | 1 |
| Ransford Doherty | Private | Navy Seal Petty Officer Second Class Zachary Harper | 1 | 1 |
| Rick Pasqualone | Captain David White | Corporal Paul Dafelmair | 1 | 1 |
| Tom Kiesche | Security Guard | Bob Whitehead | 1 | 1 |
| Aleksandra Kaniak | Hotel Desk Clerk | Russian Nurse | 1 | 1 |
| Anthony Palermo | COB | Nicholas “Nick” Bodeen A.K.A. Navy Commander | 1 | 1 |
| James A. Watson, Jr. | U.S.S. Coral Sea Captain | Navy Vice Admiral Richard Hasley | 1 | 1 |
| Jamison Jones | Edward Proxy | Gelfand | 1 | 1 |
| Thomas Rosales, Jr. | KO'ed Drug Runner | Pedro Hernandez | 1 | 1 |
| Ali Afshar | Sadik's Henchman | Qassam | 1 | 1 |
| Andy Umberger | Dr. Pomerantz | FBI Agent Freedman | 1 | 1 |
| Chas. Floyd Johnson | Dr. Bruce Gasden | AFIP Medical Examiner | 1 | 1 |
| Deprece Reddick | Andre Biggs | Spit | 1 | 1 |
Cast data from TVmaze, licensed CC BY-SA 4.0.