All 82 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 |
| Mackenzie Gray | Hob | Dr. Alistair Kreig, Lex Luthor Clone | 1 | 2 |
| Quinn Lord | Josef/Hansel | Phillipe Lamont | 1 | 2 |
| Kwesi Ameyaw | Dr. Thatcher | Darius | 1 | 3 |
| Adrian Hough | Woodcutter | Dr. Robert Bethany | 2 | 1 |
| Aleks Paunovic | Berkley | Orderly, Thug #1 | 1 | 2 |
| Alex Zahara | Midas | Dr. Jansen | 2 | 1 |
| Bart Anderson | Innkeeper | Drunk | 1 | 1 |
| Dalias Blake | Palace Guard | Security Guard | 1 | 1 |
| Jesse Hutch | Peter | Troy Turner, Billy Durden | 1 | 3 |
| John Pyper-Ferguson | Kurt Flynn | Dr. William McBride | 1 | 1 |
| Laura Wilson | Mrs. Grace | Alec's Aunt | 1 | 1 |
| Panou | FBI Agent | LuthorCorp Employee #1 | 1 | 2 |
| Paul Jarrett | Nobleman | Scientist | 1 | 1 |
| Sandy Wayne Robson | Perp | Ellis | 3 | 1 |
| Sara Canning | Gretel | Kat | 1 | 2 |
| Mark Gibbon | Head Troll | Mr. Raines, Orderly, SWAT Commander | 2 | 3 |
| Kendall Cross | Katie | Jessica Kent, Lara-El, Little Girl's Mother | 1 | 3 |
| Ali Skovbye | Paige/Grace | Haley | 2 | 1 |
| Dan Payne | Ivo | LuthorCorp Pilot | 1 | 2 |
| Jim Shield | Royal Guard | James Gibson, Sylvester Pemperton / Star-Spangled Kid | 1 | 2 |
| Michael Adamthwaite | Alistair | Andrew Connors, Rick | 1 | 2 |
| Chilton Crane | Hilda | Guidance Counselor | 3 | 1 |
| Ty Olsson | Hordor | Officer Talbert | 1 | 1 |
| Steve Makaj | Captain | Coach Calloway, Contractor | 1 | 2 |
| Tara Wilson | Ruth | Booster Gold Dancer #1, Dominatrix | 1 | 2 |
| Tom Pickett | Bishop | Principal Terrence Reynolds | 2 | 1 |
| Evan Frayne | Customer | Jewelry Store Employee | 1 | 1 |
| Michael Teigen | Rivers | Louie Esposito | 1 | 1 |
| Nancy Sivak | Helen | Marilyn | 1 | 1 |
| Nicholas Carella | Bartender | Dr. Flores | 1 | 1 |
| Ryan Booth | Man | Technician | 1 | 1 |
| Ryan Robbins | Sir Morgan | Louis Leery Jr. | 1 | 1 |
| Zak Santiago | Prince Henry | Deputy Morales | 1 | 1 |
| Cedric De Souza | Sultan | Dr. Burgeon | 2 | 1 |
| Conner Dwelly | Morraine | Young Patricia Swann | 2 | 1 |
| Paul McGillion | Knave of Hearts / Will Scarlet | LexCorp Employee | 2 | 1 |
| Cameron Bancroft | Bill | Dr. Coats | 1 | 1 |
| Raf Rogers | Arendelle Servant | Francisco | 1 | 1 |
| Richard Stroh | Edgar | Davidson | 1 | 1 |
| Rick Tae | Doctor | Dr. Hong | 1 | 1 |
| Tristan Jensen | Horatio | Police Officer | 1 | 1 |
| Amos Stern | Lead Knight | Kandorian Guard | 1 | 1 |
| Brent Stait | The Author | Kent Nelson / Dr. Fate | 1 | 1 |
| Colin Corrigan | Strumpet Thug | Dante's Mechanic | 1 | 1 |
| David Orth | NY Cop #1 | Soldier with Microphone | 1 | 1 |
| Glynis Davies | Spinster #2 | Mrs. Palmer | 1 | 1 |
| Andrew Airlie | George Darling | Mr. Woodruff | 1 | 1 |
| Angela Moore | Villager | DNA Doctor | 1 | 1 |
| Bronwen Smith | Cashier | Sandra | 1 | 1 |
| Cassidy Freeman | Jack | Tess Luthor | 1 | 1 |
| Catherine Lough Haggquist | Fairy Godmother | Mary | 1 | 1 |
| Dominic Downer | Knight | Metallo | 1 | 1 |
| Donny Lucas | Sad-Eyed Man | Caribbean man | 1 | 1 |
| Lucas Wolf | Armed Escort | Security Guard | 1 | 1 |
| Michael Soltis | Black Knight | Deputy Nees | 1 | 1 |
| Sage Brocklebank | Sir Gaston | James | 1 | 1 |
| Karen Holness | Witch of the North | Jessica Bishop | 1 | 1 |
| Marc-Anthony Massiah | Portland Cop | Emerson | 1 | 1 |
| Candus Churchill | Librarian | Nurse | 1 | 1 |
| Matt Ellis | Francisco | Tanner Sutherland | 1 | 1 |
| Michasha Armstrong | Guard | Max Kasich | 1 | 1 |
| Todd Thomson | Businessman | Secretary of Defense | 1 | 1 |
← Once Upon a Time × Smallville
Cast data from TVmaze, licensed CC BY-SA 4.0.