Actors in both Stargate SG·1 and The Flash
85 actors have appeared in both Stargate SG·1 and The Flash, across 397 episodes. The most-credited is Michelle Harrison, Assistant in Stargate SG·1 and Nora Allen, Speed Force Nora, Joan Williams in The Flash.
| Actor | In Stargate SG·1 | In The Flash | Eps | Eps |
|---|---|---|---|---|
| Michelle Harrison | Assistant | Nora Allen, Speed Force Nora, Joan Williams | 1 | 31 |
| Carmen Moore | Lab Assistant | Kristen Kramer | 1 | 21 |
| Bill Dow | Dr. Bill Lee | Quentin Quale | 20 | 1 |
| Danielle Nicolet | Reese | DA Cecile Horton | 1 | 20 |
| Tony Todd | Lord Haikon | Zoom | 3 | 14 |
| Robert Picardo | Richard Woolsey | Dexter Myles | 7 | 3 |
| Morena Baccarin | Adria | Gideon | 5 | 14 |
| Nickolas Baric | SSgt. Shandler, Penhall, F-302 Pilot | Security Guard #1, Thug #2 | 16 | 3 |
| Kendall Cross | Julia Donovan | Mayor Van Buren | 4 | 2 |
| Tobin Bell | Omoc | Savitar, Dr. Alchemy | 1 | 15 |
| Dan Payne | Kull Warrior, Jaffa, Super Soldier | Shay Lamden | 14 | 1 |
| Fraser Aitcheson | Jaffa, Hathor's Jaffa, Jaffa Commander | City Worker #2, Criminal Passenger, Prison Gang-Goon #1 | 20 | 3 |
| Peter Flemming | Agent Malcolm Barrett | John Kane | 6 | 1 |
| Shawn Stewart | Jaffa | Mitch Romero | 10 | 3 |
| James Michalopolous | SF Guard, Jaffa, F-302 Pilot | Security Guard #1 | 18 | 1 |
| Hugo Steele | Jaffa Guard, SG-22 Member | Security Guard #1 | 16 | 1 |
| Simon Burnett | Jaffa, Orderly, TSgt. Burnett | Grodd | 6 | 7 |
| Paul Lazenby | Jaffa, Prometheus Crew Member, SF Guard | Tech Thief #2 | 10 | 1 |
| Sean Millington | SSgt. Peterson, Jaffa, Ronac | Prison Gang Leader | 10 | 1 |
| Jerry Wasserman | Bernie Whitlow, Stan | President of the U.S.A. | 2 | 1 |
Cast data from TVmaze, licensed CC BY-SA 4.0.