All 144 actors in both Magnum P.I. and NCIS
144 actors have appeared in both Magnum P.I. and NCIS, across 604 episodes. The most-credited is Jay Ali, Dr. Ethan Shah in Magnum P.I. and Omer Malik in NCIS.
| Actor | In Magnum P.I. | In NCIS | Eps | Eps |
|---|---|---|---|---|
| Jay Ali | Dr. Ethan Shah | Omer Malik | 8 | 1 |
| Sarah Jane Morris | Miranda Ivey | NCIS Special Agent E.J. Barrett | 1 | 7 |
| Emily Alabi | Mahina | Navy Petty Officer First Class Kelly Ristow A.K.A. Woman | 6 | 1 |
| Paula Newsome | Brianna Healy | Jackie Vance | 1 | 4 |
| Brooke Lyons | Abigail "Abby" Miller | Tammy LaRoche | 3 | 1 |
| Robert Pine | Danny Braddock | Congressman Theodore Randolph, Golfer Ben | 2 | 2 |
| Don Swayze | Melvin Muchado | Logan Clay, Pete Walker | 1 | 2 |
| Josh Stamberg | Shane Whelan | Marine Major Ike Varnai | 2 | 1 |
| Katrina Law | Quinn Liu | Special Agent Jessica Knight | 1 | 2 |
| Austin Basis | Robert Fraser | Dalles | 1 | 1 |
| Brian Letscher | Bruce | Sam Bennett | 1 | 1 |
| Brooke Nevin | Emily Pratt | Rachael Sparks | 1 | 1 |
| Dylan Bruce | Matt McGrady | Justin Fanniker | 1 | 1 |
| Elisabeth Röhm | Brooke Mason | Mounted Park Police Sergeant May Dawson | 1 | 1 |
| Maya Stojan | Maya | Meredith Ragen | 1 | 1 |
| Michael Patrick Thornton | Charlie Owens | Jeremy Brighton | 1 | 1 |
| Billy Malone | Sean Murphy | NCIS Mechanic Dominic | 2 | 1 |
| Chase Kim | Jonny Kim | SRT Sniper | 2 | 1 |
| David Starzyk | Eddie | Allan J. Carter, Councilman Allan Berger | 1 | 2 |
| Eddie Jemison | Nolan Pierce | Terry Spooner | 1 | 2 |
| Ilia Volok | Sergei | Burly Man, Kostya Valkov | 1 | 2 |
| Sumalee Montano | Judge Marjorie Kamaka | NCIS Special Agent Nicole Taggart | 1 | 2 |
| Alex Fernandez | Captain David Evers | Joseph Flores | 1 | 2 |
| Anne Leighton | Lana Turk | Ingra Petrov | 1 | 1 |
| Barbara Eve Harris | Lucy Akina | FAA Director Stacy Bergin | 1 | 1 |
| Bill Sage | Elliot Hamler | Reed Talbot | 1 | 1 |
| Daniel Bonjour | John Gilbert | Fabian Druker | 1 | 1 |
| Dohn Norwood | Milo Rivers | Fairfax County P.D. Sergeant Sherman T. Harper | 1 | 1 |
| Elyse Levesque | Elena Dunn | Frauke Biedermann | 1 | 1 |
| Eric Ladin | Freddie | P.O. Thompson | 1 | 1 |
| Erica Luttrell | Allie Mahelona | Allison Asher | 1 | 1 |
| Jason Rogel | Maui | Leo | 1 | 1 |
| Matthew Del Negro | Todd Stewart | Balboa | 1 | 1 |
| Michael Graziadei | Val Jenson | Chuck | 1 | 1 |
| Patrick Fabian | Sam Bedrosian | Ray Vincent | 2 | 1 |
| Robert Wu | Doctor | Klugman | 1 | 1 |
| Scott Michael Campbell | Kyle Foley | Robert Miller | 1 | 1 |
| Sonya Balmores | Leanna Owens | Metro P.D. Officer Sandra Cornell | 1 | 1 |
| Tim Griffin | Sergeant Wayne Nix | Marine Sgt. Malcolm Porter | 1 | 1 |
| Tobias Jelinek | Brandon Leeds | Bodie Whitman | 1 | 1 |
| Valerie Cruz | Lani Levner | Anna | 1 | 1 |
| Dylan Bruno | John | Jason Paul Dean | 1 | 2 |
| Tijuana Ricks | Dr. Linda Ogawa | CIA Agent Pamela Walsh | 2 | 1 |
| Alex Carter | Henry Sellers | Knox Elicott | 1 | 1 |
| Antonio Jaramillo | Virgil | Pedro Rodriguez | 1 | 1 |
| Artur Zai Barrera | Jason Peterson | Navy Chief Warrant Officer Rafi Nazar | 1 | 1 |
| Assaf Cohen | Professor Roland Bar | Eli Lissack | 1 | 1 |
| Brian McNamara | Raymond Lockhart | Noah Sykes | 1 | 1 |
| Candice Coke | Vicki | Det. Danielle Hamilton | 1 | 1 |
| Carlos Sanz | Carl Nadella | Gonzales | 1 | 1 |
| David Haydn-Jones | Chad Cabrera | Marine Capt. Jim Mills | 1 | 1 |
| Eugene Kim | Devon Kang | Captain Ed Fletcher | 1 | 1 |
| Heather Mazur | Gina Pryor | Laura Strike-DePalma | 1 | 1 |
| John Kapelos | Hector Aquino | Vice Principal Vic Castor | 1 | 1 |
| John Marshall Jones | Henry Wilson | Detective Hanley | 1 | 1 |
| Jose Pablo Cantillo | Mitch Desanto | DEA Agent Mark Sisco | 1 | 1 |
| Judith Moreland | Mrs. Burke | Carrie Lewis | 1 | 1 |
| Leif Gantvoort | Red | Max Devendorf | 1 | 1 |
| Max Gail | Bob Braddock | Sam Loomis | 1 | 1 |
| Nick Jandl | Brian Abbott | Michael "Mike" Kettering | 1 | 1 |
| Rich Ceraulo Ko | Charley Franks | North Carolina State Trooper Muncie Tyson | 1 | 1 |
| Robert Baker | Randall | Seaman | 1 | 1 |
| Tara Buck | Jill Picone | P.O. Tara Marshall | 1 | 1 |
| Victoria Barabas | Lucy Dartan | Nelly Benin | 1 | 1 |
| Yaani King Mondschein | Fiona Mahoe | Leandra Perkins | 1 | 1 |
| Bryce Johnson | Liam Bates | Eddie Macklin, Navy Lieutenant David Shankton | 1 | 2 |
| Catherine Dent | Georgia Preston | Former NCIS Special Agent Whitney Sharp | 1 | 2 |
| Alain Uy | Milo | Ray Kessel | 1 | 1 |
| Alex Solowitz | Dex Hollis | Dave | 1 | 1 |
| Anthony Montgomery | Roy Till | Marine Corporal George Linden | 1 | 1 |
| Ben Vereen | Henry Barr | Lamar Addison | 1 | 1 |
| Billy Lush | Casey | Fisher Hyland | 1 | 1 |
| Charlie Bodin | Martin Hadley | Keith Messier | 1 | 1 |
| Chris Webster | Nathan Parker | Randall Clark | 1 | 1 |
| Danielle Larracuente | Nora Diaz | Navy Petty Officer Third Class Maria Gonzalez | 1 | 1 |
| David Shatraw | John | Bobby Quinn | 1 | 1 |
| Drew Rausch | DJ | Brandon Singer | 1 | 1 |
| Eddie Shin | Jaime | CGIS Special Agent Kyle Omagi | 1 | 1 |
| Erin Yolanda Pineda | Melinda Mosley | Cynthia Moniz | 1 | 1 |
| François Chau | Kinny | Henry Deng | 1 | 1 |
| Graham Shiels | Vince | Martin Jansen | 1 | 1 |
| Jeff Campanella | Lewis Peele | Store Clerk | 2 | 1 |
| Jonathan Goldstein | Roland McDowell | Glenn Block | 1 | 1 |
| Jorge-Luis Pallo | Father Paul S. Brendan | Lt. Matthew Sanchez | 1 | 1 |
| Kalama Epstein | Will Banks | Ryan Harper | 1 | 1 |
| Karole Foreman | Gladys | Lydia Miles | 1 | 1 |
| Kelly Frye | Margot Atkins | Navy Lieutenant Kara Gifford | 1 | 1 |
| Kelly Sry | Red | Dr. Scott Long | 1 | 1 |
| Leith Burke | CIA Officer Grayson | Marine Captain Jared Bratton | 1 | 1 |
| Linda Park | Dr. Lim | JAG Officer Lieutenant Nora Patel | 1 | 1 |
| Lindsay Pulsipher | Izzy | Tina Ellis | 1 | 1 |
| Peter Navy Tuiasosopo | Manui Vasega | Charles “Chucky Bang” Kang | 1 | 1 |
| Randy Oglesby | Reginald | Army Brigadier General Scott Oliver | 1 | 1 |
| Rob Evors | Lew | Navy Hull Technician Chief David Harketti | 1 | 1 |
| Serenity Grace Russell | Mia Carter | Riley | 1 | 1 |
| West Liang | Gavin Waiola | Peter Kessler | 1 | 1 |
| Lawrence Pressman | Gus Urima | Dr. Russell Pike, Secret Service Director | 1 | 2 |
| Alex Morris | Dennis Sterling | Former NCIS Special Agent Kurt Nelson | 1 | 1 |
| Anisha Adusumilli | Olivia Tremell | Veeda Rajab | 1 | 1 |
| Benita Krista Nall | Lena Hines | Amanda Wright | 1 | 1 |
| Cameron Radice | Miles Hamler | Navy Petty Officer First Class Todd Nicholas | 1 | 1 |
| Cody Easterbrook | T-Lo | NCIS Agent #1 | 1 | 1 |
| Emmie Nagata | Josie | NCIS REACT Special Agent Diana Ono | 1 | 1 |
| Jesse Bradford | Neal Conlan | John Bishop | 1 | 1 |
| Kirk Fox | Bo Bagley | Rod Carmale | 1 | 1 |
| Lanny Joon | Tony Zhao | Edward Jintao | 1 | 1 |
| Leonard Wu | Pin Kim | Navy Midshipman Alex Delapena | 1 | 1 |
| Manuel Uriza | Marwan Hayek | Nicolas Rebollo | 1 | 1 |
| Michael Benyaer | Samal Talib | Osman Zoranj | 1 | 1 |
| Peter James Smith | Randall | Benjamin Harmey | 1 | 1 |
| Philip Anthony-Rodriguez | Pete Ashby | Former Marine LCPL Lloyd Jackson | 1 | 1 |
| Ramón de Ocampo | Dr. Anthony | Navy Lieutenant Thomas Gorman | 1 | 1 |
| Russell Charles Pitts | Staff Sergeant Brett Howell | Navy Petty Officer Third Class Judd Norwood | 1 | 1 |
| Stephen Oyoung | Lu Chan | Navy Captain Andrew Hubbard | 1 | 1 |
| Terrell Tilford | Izzy Durrell | Navy Captain Jack Painter | 1 | 1 |
| Tyler Jacob Moore | FBI Special Agent Jack Wheeler | Richie Rose | 1 | 1 |
| Eliza Shin | Millie Kalili | Myrna | 1 | 1 |
| Erick Lopez | Jonah Graffy | Jaime Ribeiro | 1 | 1 |
| Jhey Castles | Sergeant Casey | Wife | 1 | 1 |
| John Bobek | Greg Nettles | Sergeant Barnes | 1 | 1 |
| Johnny Rey Diaz | Rocky Ahn | Victor Medina | 1 | 1 |
| Jon Curry | Frank Braggs | Deputy Tyler Barrett | 1 | 1 |
| Jonathan Ohye | Special Agent Scott Larkin | Nigel Yang | 1 | 1 |
| Patrick Mulvey | Jack Hill | Milo Rankoff | 1 | 1 |
| Peter Jang | Terry Kanaraot | Navy Commander James Willis | 1 | 1 |
| Rodney To | Stan | Doctor Steven Cho | 1 | 1 |
| Sterling Sulieman | FBI Agent Cantwell | NCIS Special Agent Emil Mineoux | 1 | 1 |
| Tim Rock | Jared Kane | FLETC Instructor Cambria | 1 | 1 |
| Christina Souza | Shelly Davis | Rosemarie Fuentes | 1 | 1 |
| Glenn Keogh | Parkes | Thompson Daly A.K.A. Masked Man #1 | 1 | 1 |
| Jeff Marlow | Reginald Lee | Survivalist Trainee #1 | 1 | 1 |
| Ryan Locke | Steven Dahl | Roland Ames | 1 | 1 |
| Scott Michael Morgan | Todd Reeves | Virginia State Trooper Keyes | 1 | 1 |
| Wiley Pickett | Nick Warner | Navy Captain David Wade | 1 | 1 |
| Wilmer Calderon | Oscar Leota | Wayne Cribbage A.K.A. Tiger Dad | 1 | 1 |
| Eugene Shaw | Rudy Wong | Marine Master Sergeant Neil Koh | 1 | 1 |
| Paul Mabon | Coach Dawson | Lucas' Father | 1 | 1 |
| Stephanie Y. Wang | Chenguang | Port Authority Lieutenant Emily Shaw | 1 | 1 |
| Edward Gelhaus | Kurt Brill | NCIS REACT Special Agent Edward Madden | 1 | 1 |
| Lorenzo Callender | Tatted Surfer #1 | Gene Abbott | 1 | 1 |
| Tom Choi | Ted Rogers | Navy Commander Bradley Hall | 1 | 1 |
| Tripp Pickell | Bowen | Petty Officer Pete Bidwell | 1 | 1 |
| Grinnell Morris | Larry | FBI Agent Carlson | 1 | 1 |
| Jim Lau | Moku | Old Vendor | 1 | 1 |
Cast data from TVmaze, licensed CC BY-SA 4.0.