All 90 actors in both Lost and NCIS
90 actors have appeared in both Lost and NCIS, across 629 episodes. The most-credited is Alan Dale, Charles Widmore in Lost and Tom Morrow in NCIS.
| Actor | In Lost | In NCIS | Eps | Eps |
|---|---|---|---|---|
| Alan Dale | Charles Widmore | Tom Morrow | 17 | 16 |
| Sam Anderson | Bernard Nadler | Walter Carmichael | 20 | 1 |
| Tania Raymonde | Alex Rousseau | Anna Real, Chloe Marlene | 19 | 2 |
| Mira Furlan | Danielle Rousseau | Dina Risi | 19 | 1 |
| Fredric Lehne | Marshal Edward Mars | Captain Graves | 9 | 1 |
| Daniel Roebuck | Dr. Leslie Arzt | Port Security Chief Matthew Lake | 7 | 1 |
| François Chau | Dr. Marvin Candle, Dr. Pierre Chang, Dr. Edgar Halliwax | Henry Deng | 13 | 1 |
| Neil Hopkins | Liam Pace | Jeremy Davison | 6 | 1 |
| Adetokumboh M'Cormack | Yemi | Matthew Rousseau | 3 | 3 |
| Patrick Fischler | Phil | George Stenner | 8 | 1 |
| Blake Bashoff | Karl | Josh Cooper | 8 | 1 |
| Eric Lange | Stuart Radzinsky | William Lafferty | 6 | 1 |
| Alexandra Krosney | Ellie | Nadia Harcourt | 1 | 1 |
| Chris Mulkey | Mike | Navy Captain Richard Owens | 1 | 1 |
| Graham McTavish | Sergeant | Aleksei | 1 | 1 |
| Melissa Farman | Young Danielle Rousseau | Alexis Ross | 3 | 1 |
| Patrick J. Adams | Peter Talbot | Tommy Doyle | 1 | 1 |
| Reiko Aylesworth | Amy | Anne Marshall | 3 | 1 |
| Tamara Taylor | Susan Lloyd | NCIS Special Agent Cassie Yates | 2 | 2 |
| Titus Welliver | Man in Black, Man #2 | Navy Capt. Roger Walsh | 3 | 1 |
| Frederick Koehler | Seamus | Simon Gravy | 4 | 1 |
| Billy Dee Williams | Mr. LaShade | Leroy Jethro Moore | 1 | 2 |
| Brett Cullen | Goodwin | Navy Capt. Todd Gelfand | 4 | 2 |
| Bruce Davison | Dr. Douglas Brooks | Lester Burm | 2 | 1 |
| Kevin Chapman | Mitch | Billy Doyle | 2 | 1 |
| Rachel Ticotin | Captain Teresa Cortez | Joy Sullivan Aaronson | 2 | 1 |
| Sheila Kelley | Zoe | Victoria Dearing | 5 | 1 |
| Tracy Middendorf | Bonnie | Tara Bick | 2 | 1 |
| Susan Duerden | Carole Littleton | Lorraine Mallard | 3 | 1 |
| April Parker Jones | Dr. Erica Stevenson | Elaine Davis | 1 | 1 |
| David Starzyk | Brian Porter | Allan J. Carter, Councilman Allan Berger | 1 | 2 |
| Dean Norris | Howard Gray | Vestman | 1 | 1 |
| Marc Vann | Doctor | Mark Sadowski | 4 | 1 |
| Robert Patrick | Hibbs | Colonel Merton Bell | 1 | 1 |
| Ron Bottitta | Leonard | British Royal Marine Captain William Jamison | 2 | 1 |
| Samm Levine | clerk | NCIS Agent Cashier Fred Seymour | 1 | 2 |
| Tim De Zarn | Trevor | David Runion | 1 | 1 |
| David S. Lee | Younger Charles Widmore | Veli Tupolev | 2 | 1 |
| Cas Anvar | Omer | Masoud Tariq | 1 | 1 |
| Chad E. Donella | desk clerk | John Briggs | 1 | 1 |
| Cleo King | Government Worker | Della Robinson | 1 | 1 |
| Dariush Kashani | Haddad | Ezmaray Daoub | 1 | 1 |
| Ivo Nandi | Oldest Hunter | Manny Varigan | 1 | 1 |
| Kevin Rankin | Jerry | Dennis Moran | 1 | 1 |
| Mackenzie Astin | Tom Brennan | Michael Rose | 1 | 1 |
| Navid Negahban | Omar | Jimmy Shaloub | 1 | 1 |
| Oliver Muirhead | Monsignor | Jay Danorth | 1 | 1 |
| Skyler Stone | EMT | Uncle Stan | 1 | 1 |
| Zack Ward | Marc | Police Officer Billy Krieg | 1 | 1 |
| Dayo Ade | Justin | ER Orderly | 2 | 1 |
| Wendy Braun | Gina | Cindy Sanchez | 2 | 1 |
| Amy Stewart | Mother | Katie Happ | 1 | 1 |
| Aramis Knight | Sam | Nick Miller | 1 | 1 |
| Izzy Diaz | Ignacio | Nelson Ast | 1 | 1 |
| Keir O'Donnell | Thomas | Ramsey Boone | 1 | 1 |
| Madeline Carroll | Annie | Angela Kelp | 1 | 1 |
| Matthew Alan | Cunningham | Navy Lieutenant Paul Booth | 1 | 1 |
| Rick Overton | Matthew Reed | Elmer Barlow | 1 | 1 |
| Shaun Toub | Sami | Khalid Mohammed Bakr | 1 | 1 |
| Shishir Kurup | Donovan | Khalil Farooq | 1 | 1 |
| Stephanie Niznik | Dr. Evelyn Ariza | Sharon Bellows | 1 | 1 |
| Steven Elder | Jonas Whitfield | Nick Taylor | 1 | 1 |
| Christina Souza | Nurse | Rosemarie Fuentes | 2 | 1 |
| Michael Dempsey | Foreman | Coach Morgan | 2 | 1 |
| Anne Bedian | Amira | Hamida | 1 | 1 |
| Craig Robert Young | Director | Ian Lipovetskiy | 1 | 1 |
| Geoffrey Rivas | Father Chuck | Ricardo Guzman | 1 | 1 |
| James Huang | Chet | Petty Officer Wong | 1 | 1 |
| Lanny Joon | Dr. Bae | Edward Jintao | 1 | 1 |
| Larry Clarke | customer | Director | 1 | 1 |
| Lela Loren | Claudia | NCIS Special Agent Isabella Cortez | 1 | 1 |
| Rebecca Tilney | Emily's Mother | Madeline Dumont | 1 | 1 |
| Scott Paulin | Sullivan | Navy Capt. Kevin Dorn | 1 | 1 |
| Dan Hildebrand | Custodian | Cassio Chavez | 1 | 1 |
| Eyal Podell | Young Man | Namir Eschel | 1 | 1 |
| John Henry Canavan | Simon Pace | Jake Munro | 1 | 1 |
| Josh Randall | Nathan | Navy Commander Ryan Barnes | 1 | 1 |
| Juan Carlos Cantu | Father Suarez | Leo Silva | 1 | 1 |
| Susse Budde | Mom | Laura Osgood | 1 | 1 |
| Emerson Brooks | Tony | Navy Lieutenant Carl Greer | 1 | 1 |
| Anthony Keyvan | Young Sayid | Elan Ghorbani | 1 | 1 |
| Darren Keefe | Billy | Steven Baker | 1 | 1 |
| Nigel Gibbs | funeral director | Admiral Theodore Tully | 1 | 1 |
| Phil Abrams | Gellert | Hotel Manager | 1 | 1 |
| Ben Cain | MRI Tech | Cy White | 1 | 1 |
| Christopher Amitrano | Burditt | Local LEO | 1 | 1 |
| Mandy June Turpin | Florence | Karen Bright | 1 | 1 |
| Necar Zadegan | Translator | Marine Lt. Rihama Shaheen | 1 | 1 |
| George Gerdes | Mr. Springer | Field Marshall Nigel Rand | 1 | 1 |
| Troy Vincent | Oceanic Rep | Lawyer | 1 | 1 |
Cast data from TVmaze, licensed CC BY-SA 4.0.