Actors in both Smallville and Stargate Atlantis
112 actors have appeared in both Smallville and Stargate Atlantis, across 317 episodes. The most-credited is Kavan Smith, Wade Mahaney in Smallville and Major Lorne in Stargate Atlantis.
| Actor | In Smallville | In Stargate Atlantis | Eps | Eps |
|---|---|---|---|---|
| Kavan Smith | Wade Mahaney | Major Lorne | 1 | 29 |
| Paul McGillion | LexCorp Employee | Dr. Carson Beckett | 1 | 26 |
| Christopher Heyerdahl | Zor-El | Wraith Leader (Todd), Halling, Male Wraith | 2 | 22 |
| Sharon Taylor | Faora | Amelia Banks, Replicator Tech, Technician | 7 | 12 |
| Mike Dopud | Security Guard George | Kiryk | 10 | 1 |
| Ari Cohen | Regan Matthews | Tyrus | 6 | 1 |
| Michael Shanks | Carter Hall / Hawkman | Dr. Daniel Jackson | 4 | 3 |
| Anna Galvin | Gina | Dr. Vanessa Conrad | 5 | 1 |
| Anna Williams | Eva Greer, Monica | Female Tech | 5 | 1 |
| Craig Veroni | Security Guard, State Trooper | Dr. Peter Grodin | 2 | 9 |
| Garwin Sanford | Ed Brooks | Simon Wallis | 1 | 3 |
| Rob LaBelle | Dr. Fredrick Walden | Mr. Coolidge | 3 | 1 |
| Robert Picardo | Edward Teague | Richard Woolsey | 2 | 6 |
| Ron Selmour | Wendell Connelly | Jannick | 3 | 1 |
| Chelan Simmons | Felice Chandler, Rhonda the Cheerleader | Mara | 2 | 1 |
| Ryan Robbins | Louis Leery Jr. | Ladon Radim | 1 | 5 |
| Dean Marshall | Seattle Police Officer | Sgt. Bates | 1 | 10 |
| Chris Gauthier | Winslow Schott / Toyman, LuthorCorp Technician | Mattas | 4 | 1 |
| Leela Savasta | Gretchen Winters, Talon Girl | Vega, Esposito | 2 | 3 |
| Yan-Kay Crystal Lowe | Vala | Mardola | 4 | 1 |
Cast data from TVmaze, licensed CC BY-SA 4.0.