Actors in both Supergirl and The Flash
114 actors have appeared in both Supergirl and The Flash, across 310 episodes. The most-credited is Patrick Sabongui, Captain David Singh in Supergirl and David Singh in The Flash.
| Actor | In Supergirl | In The Flash | Eps | Eps |
|---|---|---|---|---|
| Patrick Sabongui | Captain David Singh | David Singh | 1 | 45 |
| John Wesley Shipp | Barry Allen / The Flash (Earth-90) | Dr. Henry Allen, Jay Garrick / The Flash (Earth-3), Barry Allen / The Flash of Earth-90 | 1 | 29 |
| Andrea Brooks | Eve Teschmacher | Eve Teschmacher | 26 | 1 |
| Danielle Nicolet | DA Cecile Horton | DA Cecile Horton | 1 | 20 |
| Jon Cryer | Lex Luthor | Lex Luthor | 20 | 1 |
| Tom Cavanagh | Harrison Nash Wells / Pariah, Eobard Thawne / Reverse-Flash, Harrison Wells | Dr. Harrison Wells, Harrison Wolfgang Wells, Dr. Harrison "Harry" Wells / Earth-2 | 3 | 17 |
| Jessica Parker Kennedy | Wedding Caterer | Nora West-Allen | 1 | 14 |
| Melissa Benoist | Snowbird / Linda Lee / Red Daughter, Kara Zor-El (Earth-X) / Overgirl | Supergirl / Kara Zor-El / Kara Danvers, Kara Zor-El (Earth-X) / Overgirl | 10 | 5 |
| David Ramsey | John Diggle | John Diggle | 2 | 11 |
| Victor Garber | Dr. Martin Stein / Firestorm | Dr. Martin Stein / Firestorm, Digsy Foss' Husband, Professor Martin Stein | 1 | 12 |
| Emily Bett Rickards | Felicity Smoak | Felicity Smoak, Felicity Smoak (Earth-X) | 1 | 8 |
| Jesse L. Martin | Joe West | Joe West, Digsy Foss | 1 | 7 |
| Tyler Hoechlin | Superman / Kal-El / Clark Kent, Dr. John Deegan / Superman (Elseworlds) | Clark Kent / Superman | 6 | 2 |
| Brandon Routh | Ray Palmer / The Atom | Ray Palmer / The Atom, Clark Kent / Superman of Earth-96 | 1 | 5 |
| Jeremy Jordan | Winslow "Winn" Schott, Winslow Schott (Alternate Earth) / Toyman | Freedom Fighter General Schott, Grady | 4 | 2 |
| Stephen Amell | Oliver Queen / Green Arrow, Oliver Queen (Earth-X) / Dark Arrow, Oliver Queen / Green Arrow (Earth-16) | Oliver Queen / Arrow, Oliver Queen (Earth-X) / Dark Arrow | 3 | 9 |
| Arran Henn | Newscaster | CatCo Reporter | 10 | 1 |
| Keiynan Lonsdale | Wally West / Kid Flash | Wallace "Wally" West | 1 | 4 |
| Phil LaMarr | Malefic J'onzz | Rag Doll | 7 | 3 |
| David Harewood | Hank Henshaw / Cyborg Superman | Hank Henshaw / J'onn J'onzz / Martian Manhunter | 5 | 2 |
Cast data from TVmaze, licensed CC BY-SA 4.0.