All 73 actors in both 3rd Rock from the Sun and NCIS
73 actors have appeared in both 3rd Rock from the Sun and NCIS, across 647 episodes. The most-credited is David DeLuise, Bug Pollone in 3rd Rock from the Sun and Michael Franklin in NCIS.
| Actor | In 3rd Rock from the Sun | In NCIS | Eps | Eps |
|---|---|---|---|---|
| David DeLuise | Bug Pollone | Michael Franklin | 44 | 1 |
| Marianne Muellerleile | Lucy | Nurse Hannah Dunstan | 6 | 1 |
| Elayn J. Taylor | Teacher #1 | Odette Malone | 1 | 5 |
| Francis X. McCarthy | President | Roman Parker | 1 | 4 |
| John D'Aquino | Mr. Randell | Ken Ashmore | 4 | 1 |
| Victoria Kelleher | Waitress | NCIS Accountant Barbara Dunsley | 1 | 3 |
| Jim Beaver | Doug | Captain Tom O’Rourke | 5 | 1 |
| Rif Hutton | Bookstore Guy | Marine General Phillip Braxton | 1 | 2 |
| Chip Chinery | Guy, Janitor, Maintenance Guy | NCIS Employee Rodney Spence | 4 | 1 |
| Jennifer Rhodes | Mrs. Sumner | Claudia | 4 | 1 |
| Bronson Pinchot | Roy Albright | George Burton | 1 | 1 |
| Jeanette O'Connor | Housewife | Teri | 1 | 1 |
| Lisa Kaminir | Margueritte | Dr. Romero | 1 | 1 |
| Lise Simms | Gabby | Kenna Reynolds | 1 | 1 |
| Matt Battaglia | Bryce Canyon | P.O. Porcaro | 1 | 1 |
| Michael McShane | Phil | Dr. Matthew Heller | 1 | 1 |
| Dennis Cockrum | Colonel Pinkham | NSA Tech, Senator | 1 | 2 |
| Jean St. James | Waitress | Marilyn Davis | 1 | 2 |
| Larry Miller | Garvin | Ed Slater | 1 | 2 |
| Aaron Lustig | Dr. Severson | Doctor Victor Kalsa | 1 | 1 |
| Christine Lakin | Michelle | Rachel Wells | 1 | 1 |
| Jake Thomas | Kid | Alec Dell, Petty Officer Derek Bailey | 1 | 2 |
| Jim Meskimen | Alan | Doctor Farrel Emerson | 1 | 1 |
| Kathleen Garrett | Celia | Judge Mary Branigan | 1 | 1 |
| Kim Johnston Ulrich | Dorothy Strudwick | Nancy Hargrove | 2 | 1 |
| Michael Dempsey | Security Guard | Coach Morgan | 1 | 1 |
| Richard Fancy | Judge DeBelko | Leonard Weiss | 2 | 1 |
| Robert Clendenin | Man #1 | Pharmacist | 1 | 1 |
| Terry Rhoads | Bill, Salesman | Stanley Borden | 2 | 1 |
| Bart McCarthy | Grouch, Hamlet | Retired Marine Master Sergeant George Hawkins | 2 | 1 |
| David Chisum | Chip Caswell | Doctor David Woods | 1 | 2 |
| Anthony Tyler Quinn | Sam "The Butcher" Marchetti | Navy Commander Clarence Daniels | 1 | 1 |
| Dwayne Macopson | Biff | Marine Major Carl Pritchard | 1 | 1 |
| Julie Claire | Jenny | Lois Heller | 1 | 1 |
| Lindsey McKeon | Tiffany | Taylor Matthews | 1 | 1 |
| Mike Starr | Frank Muller | Monroe Cooper | 1 | 1 |
| Rochelle Robinson | Waitress | Megan Boone | 1 | 1 |
| Sally Ann Brooks | Verna | Margaret Scott | 1 | 1 |
| Shireen Crutchfield | Kirsta | Jane Woods | 1 | 1 |
| Stephanie Erb | Ellen | Rachel Nasry | 1 | 1 |
| Van Epperson | Bill | Pop | 1 | 1 |
| Melissa Greenspan | The Maid | Mother, NTSB Agent Melanie Bass | 1 | 2 |
| Alex Alexander | Tiffany | Sara Turcott | 1 | 1 |
| David Bickford | Professor #1 | Catholic Priest | 1 | 1 |
| Diane Delano | Lorraine | Dee Dee Chesney | 1 | 1 |
| Jeff Austin | Doctor | Colonel Mike Granger | 1 | 1 |
| Lesley Fera | Woman #2 | Dr. Wendy Lythcott | 1 | 1 |
| Madison Mason | Mr. Jack Wallencott | Marine Lt. Colonel Bushnell | 1 | 1 |
| Patricia Bethune | Teacher | Paulette Quinn | 1 | 1 |
| Victor Raider-Wexler | Janitor | Patrick Carmody | 1 | 1 |
| Wayne Péré | Jonesy | Stanley Springer | 1 | 1 |
| Benjamin King | Man In Bar | Public Affairs Office Ron Sands | 1 | 1 |
| Eric Jungmann | Jerry | Andy Pringle | 1 | 1 |
| Lorna Scott | Mrs. Walters | Sally Parker | 1 | 1 |
| Michelle Anne Johnson | Receptionist | DOD Counterintelligence Supervisor Emma Fisher | 1 | 1 |
| Scott Klace | Mark | Dr. Timothy Hass | 1 | 1 |
| Susan Ruttan | Cathy | Samantha "Sammy" Delfino | 1 | 1 |
| Frank Clem | Waiter | Phil Rutland | 1 | 1 |
| Michael Ensign | Fordham | Doctor Ishmael Havana | 1 | 1 |
| Rick Hall | Limo Driver | Larry Lawrence | 1 | 1 |
| Steven M. Gagnon | Cop | CIA Director Roger Kirkwood | 1 | 1 |
| Andrea C. Robinson | Mrs. Milly Wallencott | Midge Watkins | 1 | 1 |
| Jamie Kaler | Delivery Man | Christopher Bell | 1 | 1 |
| John Eric Bentley | Todd | Captain Arthur Caldwell | 1 | 1 |
| Mark Ankeny | Husband | Barry Kester | 1 | 1 |
| Matthew Mahaney | Fan #1 | FBI Agent Bruce Rivers | 1 | 1 |
| Michael Adler | Handler | Navy Capt. Burger | 1 | 1 |
| Tom Ayers | Clerk | Bobby Dale Douglas | 1 | 1 |
| Tom Kiesche | Large Man | Bob Whitehead | 1 | 1 |
| Mailon Rivera | Campus Cop | Navy Commander Scott Bitterman | 1 | 1 |
| Tatum Shank | Football Player | Ted | 1 | 1 |
| D. Elliot Woods | Doctor Ladypart | Detective Bradley | 1 | 1 |
| Kim Robillard | Howard | Dwayne Parker | 1 | 1 |
← 3rd Rock from the Sun × NCIS
Cast data from TVmaze, licensed CC BY-SA 4.0.