Actors in both Once Upon a Time and Smallville
82 actors have appeared in both Once Upon a Time and Smallville, across 373 episodes. The most-credited is Meghan Ory, Red Riding Hood / Ruby in Once Upon a Time and Megan Calder in Smallville.
| Actor | In Once Upon a Time | In Smallville | Eps | Eps |
|---|---|---|---|---|
| Meghan Ory | Red Riding Hood / Ruby | Megan Calder | 19 | 1 |
| Chris Gauthier | William Smee | Winslow Schott / Toyman, LuthorCorp Technician | 14 | 4 |
| Olivia Steele-Falconer | Violet | Natasha | 8 | 1 |
| Sharon Taylor | Witch of the East | Faora | 1 | 7 |
| Michael Coleman | Happy | Bert Camp | 38 | 1 |
| Anna Galvin | Madeline | Gina | 1 | 5 |
| Ted Whittall | The King / Mitchell Herman | Rick Flag, Carter Bowfry | 1 | 5 |
| Jakob Davies | Pinocchio / August W. Booth | Alexander Luthor Lx-15 | 8 | 2 |
| Eric Keenleyside | Sir Maurice / Moe French | Mike | 6 | 1 |
| Christie Laing | Maid Marian, Woman | Katherine Goodwin, Mindy | 7 | 2 |
| Ingrid Torrance | Nurse Ratched | Zoe Flite | 13 | 1 |
| Chris Shields | Military Advisor | Courier, EMT #1, Reporter | 1 | 4 |
| Gabrielle Rose | Ruth | Mrs. Arkin | 4 | 1 |
| Julian D. Christopher | Adoption Agent | Dr. MacIntyre | 1 | 6 |
| John DeSantis | The Dove | Male Zoner, Solomon Grundy, The Traveler | 1 | 3 |
| Pascale Hutton | Gerda, Queen Arendelle, Regal Woman | Raya, Karen Gallagher | 3 | 3 |
| Barclay Hope | Lily's Father, Man | Dr. Anthony Bright, Doctor | 2 | 3 |
| Paul Lazenby | Claude, Black Knight No. 1, Mirror-Carrying Knight | Tony | 4 | 1 |
| Aaron Douglas | Fendrake the Healer | Deputy Michael Vertigo, Pierce | 1 | 2 |
| Greyston Holt | Jim/Frederick | Tobias Rice | 2 | 1 |
Cast data from TVmaze, licensed CC BY-SA 4.0.