Actors in both Supernatural and The X-Files
299 actors have appeared in both Supernatural and The X-Files, across 545 episodes. The most-credited is Mitch Pileggi, Samuel Campbell in Supernatural and Assistant Director Walter Skinner in The X-Files.
| Actor | In Supernatural | In The X-Files | Eps | Eps |
|---|---|---|---|---|
| Mitch Pileggi | Samuel Campbell | Assistant Director Walter Skinner | 8 | 70 |
| Jim Beaver | Bobby Singer, Apocalypse World Bobby Singer | Coroner | 69 | 1 |
| William B. Davis | Professor | Cigarette-Smoking Man | 1 | 44 |
| Mark Sheppard | Crowley | Bob the Caretaker / Cecil L'Ively | 34 | 1 |
| Nicholas Lea | Elliot Ness | Agent Alex Krycek, Michael | 1 | 25 |
| Bruce Harwood | Professor William Hill | John Fitzgerald Byers | 1 | 38 |
| Steven Williams | Rufus Turner | Mr. X | 6 | 13 |
| Mark Pellegrino | Lucifer, Nick | Derwood Spinks | 15 | 1 |
| Bill Dow | Dr. Kadinsky, Mayor Chip Harrington | Dr. Charles Burks, Dad, Dr. Rick Newton | 2 | 9 |
| Ty Olsson | Benny Lafitte, Eli | Younger Orderly | 10 | 1 |
| Amanda Tapping | Naomi | Carina Sayles | 9 | 1 |
| Keith Szarabajka | Professor Donatello Redfield | Anthony Tipet | 9 | 1 |
| William MacDonald | Abraham Peterson, Sheriff | Agent Dan Kazanjian, Buddy Riggs, Dr. Oppenheim | 2 | 5 |
| Nicki Aycox | Meg Masters | Chastity Raines | 5 | 1 |
| A.J. Buckley | Ed Zeddemore | Dude | 4 | 1 |
| Karin Konoval | Mrs. Curry, Ruth | Little Chucky Poundstone, Little Judy Poundstone, Madame Zelma | 2 | 3 |
| Kevin McNulty | Phillip, Reverend Roy Le Grange | Agent Fuller, Dr. Christopher Davey | 2 | 3 |
| Alfred E. Humphreys | Sheriff | Dr. Mark Pomerantz, Michael Asekoff, Mission Controller #2 | 1 | 3 |
| Donnelly Rhodes | Father Simon, Mr. Shaw | General Francis, Jim Parker | 2 | 2 |
| Fiona Vroom | Dental Assistant, Nurse | Barbara Beaumont / Sitcom Barbara, Young Cassandra | 2 | 2 |
Cast data from TVmaze, licensed CC BY-SA 4.0.