Actors in both The Practice and The X-Files
192 actors have appeared in both The Practice and The X-Files, across 385 episodes. The most-credited is James Pickens, Jr., Detective Mike McKrew in The Practice and Deputy Director Alvin Kersh in The X-Files.
| Actor | In The Practice | In The X-Files | Eps | Eps |
|---|---|---|---|---|
| James Pickens, Jr. | Detective Mike McKrew | Deputy Director Alvin Kersh | 15 | 22 |
| Richard McGonagle | Judge Patrick Wilcox | Dr. Francis Orovetz | 16 | 1 |
| Charles Cioffi | Judge Walter Kimball | Section Chief Scott Blevins | 5 | 5 |
| Susan Blommaert | Judge Rudy Fox | Phyllis H. Paddock | 7 | 1 |
| Michael Emerson | William Hinks | Oliver Martin | 6 | 1 |
| Mik Scriba | Detective Frank Simons | Lieutenant Kraskow | 6 | 1 |
| Arye Gross | Rabbi Daniel Warner, Attorney John Franklin | Dr. Puvogel | 5 | 1 |
| Donal Logue | A.D.A. Dickie Flood | Agent Tom Colton | 5 | 1 |
| Gibby Brand | Judge William McGough | Arthur Gaffin | 5 | 1 |
| Edward Asner | Judge Marcus Winnaker, Judge Matlin Pratt | Maurice | 4 | 1 |
| John Hawkes | Stuart Donovan | Phillip Padgett | 3 | 1 |
| Lindsey Ginter | John Schramm | Crew-Cut Man | 2 | 2 |
| Stanley Anderson | Dr. Robert Gale, Dr. Thomas Bellamy | Agent Lewis Schoniger | 3 | 1 |
| Steven Flynn | D.A. Martin Toomey | CIA Agent | 3 | 1 |
| Willie Garson | D.A. Frank Shea | Henry Weems, Quinton 'Roach' Freely | 2 | 2 |
| Željko Ivanek | A.U.S.A. Steven Sanders, Assistant District Attorney General James McGovern, Matthew Davies | Roland Fuller | 3 | 1 |
| John Finn | Detective Henry Doaks | Michael Kritschgau | 2 | 5 |
| James Handy | Lieutenant Paul Stewart, Philly Sidlow | Detective Alan Cross | 2 | 1 |
| Michael Fairman | Governor's Council Richmond, School Board President Harold Shaw | Jason Nichols | 2 | 1 |
| Paul McCrane | Martin Parks | Leonard Betts | 2 | 1 |
Cast data from TVmaze, licensed CC BY-SA 4.0.