Actors in both The Outer Limits and The X-Files
313 actors have appeared in both The Outer Limits and The X-Files, across 372 episodes. The most-credited is William B. Davis, Ed, John Wymer in The Outer Limits and Cigarette-Smoking Man in The X-Files.
| Actor | In The Outer Limits | In The X-Files | Eps | Eps |
|---|---|---|---|---|
| William B. Davis | Ed, John Wymer | Cigarette-Smoking Man | 2 | 44 |
| Bruce Harwood | Dr. Avery Strong, Dr. Norris, Miles Pendergast | John Fitzgerald Byers | 4 | 38 |
| Nicholas Lea | Jacob Hardy, Mac 27 | Agent Alex Krycek, Michael | 2 | 25 |
| Sheila Larken | Francis Hunter | Margaret Scully | 1 | 16 |
| Laurie Holden | Susan McLaren | Marita Covarrubias | 1 | 11 |
| Alex Diakun | Nicholas Prentice, Minister, Moses Saxon | Buddy / Devil, Curator, Dr. Fingers | 6 | 5 |
| Bill Dow | Doc Fink, Dr. Keeler | Dr. Charles Burks, Dad, Dr. Rick Newton | 2 | 9 |
| Brendan Beiser | Ben Powell | Agent Sean Pendrell | 1 | 10 |
| Rebecca Toolan | Mrs. Whelan | Teena Mulder | 1 | 10 |
| Adam Baldwin | Major James Bowen | Knowle Rohrer | 1 | 6 |
| Cary Elwes | Dr. John York | Assistant Director Brad Follmer | 1 | 6 |
| Roger Cross | Bartender, Kevin Flynn, Lt. Lockhart | Field Agent, Officer Wentworth, Private Kittel | 3 | 4 |
| William MacDonald | Gary Rosman, Mugger | Agent Dan Kazanjian, Buddy Riggs, Dr. Oppenheim | 2 | 5 |
| Andrew Airlie | Agent Corey Lonn, Don, Dr. Kevington | Attorney, Rob | 4 | 2 |
| Lorena Gale | Louise, Committee Member | Attorney, Ellen Bledsoe, Nurse Wilkins | 3 | 3 |
| Gabrielle Miller | Charlotte Nichols, Receptionist, Wendy Seymour | Brenda J. Summerfield, Paula Gray | 3 | 2 |
| Hiro Kanagawa | Ron Hikida, Tali | Dr. Yonechi, Garner, Peter Tanaka | 2 | 3 |
| Timothy Webber | Dep. Middleton, Martin Nash | Detective Talbot, Dr. Paul Farraday, Jess Harold | 2 | 3 |
| David Cubitt | Colonel Faber, Curtis Grainger, Kevin Stein | Captain Barclay | 3 | 1 |
| Don S. Davis | Detective Wilson, General Callahan | Captain William Scully | 2 | 2 |
Cast data from TVmaze, licensed CC BY-SA 4.0.