Clockwise from top left: Jennifer Morrison, Colin O'Donoghue, Josh Dallas, Jared S. Gilmore, Rebecca Mader, Emilie de Ravin, and Lana Parrilla.
Members of Once Upon a Time and Once Upon a Time in Wonderland's sprawling casts who have pages on this wiki.- Doug Abrahams: Sheriff
- Amy Acker: Nova/Sister Astrid
- Ava Acres: Young Regina Mills
- Jonathan Adams: Voice of Merlin
- Deniz Akdeniz: Aladdin
- Reese Alexander: Jafar's Guard #1
- Joaquim De Almeida: King Xavier
- Tony Amendola: Gepetto/Marco
- David Anders: Victor Frankenstein/Dr. Whale
- Naveen Andrews: Jafar (Wonderland)
- Gabrielle Anwar: Lady Tremaine/Victoria Belfrey
- Lee Arenberg: Grumpy/Leroy
- Amir Arison: The Sultan
- Eion Bailey: Pinocchio/August Booth
- Lisa Banes: Lady Tremaine
- Kristin Bauer: Maleficent
- Noah Bean: Daniel
- Abraham Benrubi: Arlo
- Elizabeth Blackmore: Mary Lydgate
- Sarah Bolger: Princess Aurora
- Sage Brocklebank: Sir Gaston LeGume
- Andrea Brooks: Charlotte
- Millie Bobby Brown: Young Alice
- Yvette Nicole Brown: Voice of Ursula (Deity)
- Artine Tony Browne: Arresting Cop
- Agnes Bruckner: Lily Page
- Sara Canning: Gretel
- Robert Carlyle: Rumpelstiltskin/Mr. Gold
- Emma Caulfield: The Blind Witch
- Warren Christie: Ryan
- Jamie Chung: Mulan
- Keegan Connor Tracy: Blue Fairy/Mother Superior
- Ben Cotton: Tweedle #2
- Mekia Cox: Tiana/Sabine
- Jonny Coyne: Dr. Lydgate
- Kendall Cross: Katie
- David Cubitt: Robert
- Alan Dale: King George/Albert Spencer
- Josh Dallas: David Nolan/Prince Charming, Prince James
- Roger Daltrey: Voice of the Caterpillar (Once)
- Karen David: Princess Jasmine
- Keith David: The Cheshire Cat
- Colin O'Donoghue: Captain Hook/Killian Jones
- Jamie Dornan: The Huntsman/Graham Humbert
- Aaron Douglas: Fendrake the Healer
- Brad Dourif: Zoso
- Merrin Dungey: Ursula
- Beverley Elliott: Granny/Widow Lucas
- Tom Ellis: Robin Hood
- Ethan Embry: Owen Flynn/Greg Mendell
- Giancarlo Esposito: The Magic Mirror/Sidney Glass
- Oded Fehr: Jafar (Once)
- Alison Fernandez: Lucy Mills/Lucy Vidrio
- Matty Finochio: Tweedle #1/Marcus Tremaine
- Patrick Fischler: Isaac Heller/The Author
- Scott Michael Foster: Kristoff
- Cassidy Freeman: Jacqueline 'Jack'
- Peter Gadiot: Cyrus
- JoAnna Garcia Swisher: Ariel
- Jorge Garcia: Anton
- Liam Garrigan: King Arthur
- Chris Gauthier: William Smee
- Brian George: Old Prisoner
- Greg Germann: Hades
- Mark Gibbon: Voice of Trolls
- Leah Gibson: Nyx
- Jared S. Gilmore: Henry Mills.
- Annabeth Gish: Anita
- Robin Givens: Queen Eudora
- Ginnifer Goodwin: Snow White/Mary Margaret Blanchard
- Christopher Gorham: The Wizard of Oz/Walsh
- Mckenna Grace: Young Emma Swan
- Mackenzie Gray: Hob
- Anastasia Griffith: Princess Abigail/Kathryn Nolan
- Harry Groener: Martin
- Georgina Haig: Elsa
- Liam Hall: The Prince
- C. Ernst Harth: Abraham/Burly Man/Ogre
- Barbara Hershey: Princess Cora/The Queen of Hearts
- David Hoflin: Zeus
- Greyston Holt: Frederick/Jim
- Barclay Hope: Lily's father
- Iggy Pop: Voice of the Caterpillar (Wonderland)
- Craig Horner: Count of Monte Cristo/Edmond Dantes
- Pascale Hutton: Queen Gerda
- Scott Hylands: Captain
- James Immekus: Michael Darling
- Manny Jacinto: Quon
- Paul Johansson: Gabriel/Woodcutter
- Jarod Joseph: Gus/Billy
- Adelaide Kane: Drizella Tremaine/Ivy Belfrey
- Matt Kane: John Darling
- Robbie Kay: Peter Pan
- Gabe Khouth: Sneezy/Tom Clark
- Rya Kihlstedt: Cleo Fox
- Elliot Knight: Merlin
- Lily Knight: Witch
- Elizabeth Lail: Princess Anna
- Christie Laing: Maid Marian
- Eric Lange: Young Prince Leopold
- Nicholas Lea: The Woodcutter / Michael Tillman
- John Lithgow: The White Rabbit/Percy
- Stephen Lord: Malcolm
- Max Lloyd-Jones: Jacob
- Catherine Lough Haggquist: Fairy Godmother
- Sophie Lowe: Alice
- Henri Lubatti: Lumiere
- Shannon Lucio: Seer
- Tzi Ma: The Dragon
- Rebecca Mader: The Wicked Witch of the West/Zelena
- Bailee Madison: Young Snow White
- Sean Maguire: Robin Hood
- Steve Makaj: Captain
- Costas Mandylor: Captain Silver
- Amy Manson: Queen Merida
- Marilyn Manson: Voice of the Shadow
- Sonequa Martin-Green: Tamara
- James Marsters: Sir Mordred (Tales From The Underworld: A Knight With Cruella short)
- Giles Matthey: Gideon
- Rose McGowan: Young Cora
- Rose McIver: Tinker Bell
- Gil McKinney: Prince Eric
- Lauren McKnight: Elizabeth "Lizard"
- Mekenna Melvin: Clorinda
- Charles Mesure: Blackbeard
- Elizabeth Mitchell: Snow Queen
- Tyler Jacob Moore: Prince Hans
- Julian Morris: Prince Phillip
- Jennifer Morrison: Emma Swan
- Nicole Muņoz: Young Lily Page
- Jaime Murray: The Black Fairy
- Lesley Nicol: Johanna
- Ty Olsson: Hordor
- Meghan Ory: Red Riding Hood/Ruby
- Kip Pardue: Chad
- Lana Parrilla: The Evil Queen/Regina Mills
- Nathan Parsons: Hansel/Jack/Nick Branson
- Dan Payne: Captain of the Guard (Wonderland)
- Ivo in main series.
- Tony Perez: Prince Henry
- Sally Pressman: Helga
- John Pyper-Ferguson: Kurt Flynn
- Dania Ramirez: Cinderella/Jacinda Vidrio
- Emilie de Ravin: Belle/Lacey
- Michael Raymond-James: Baelfire/Neal Cassidy
- Teri Reeves: Dorothy Gale
- John Rhys-Davies: Pabbie
- Emma Rigby: Red Queen/Anastasia
- Ryan Robbins: Sir Morgan
- Zuleikha Robinson: Amara
- Kacey Rohl: Megara
- Chad Rook: Captain Ahab
- Gabrielle Rose: Ruth
- Raphael Sbarge: Jiminy Cricket/Archibald Hopper
- Matreya Scarrwener: Young Dorothy Gale
- Richard Schiff: King Leopold
- Jessy Schram: Princess Cinderella/Ashley Boyd
- Peta Sergeant: The Jabberwocky
- Brighton Sharbino: Young Ingrid
- Rekha Sharma: Willima
- Tiera Skovbye: Robin Hood/Margot West
- Victoria Smurfit: Cruella De Vil
- Michael Socha: The Knave of Hearts/Will Scarlet
- Rena Sofer: Queen Eva
- Sebastian Stan: The Mad Hatter/Jefferson
- Anton Starkman: Young Gideon
- Benjamin Stockham: Young Owen Flynn
- Faran Tahir: Captain Nemo
- Sharon Taylor: Witch of the East
- Paul Telfer: Lord Macintosh
- Emily Tennant: Isla
- Freya Tingley: Wendy Darling
- Sara Tomko: Tiger Lily
- Wil Traval: Sheriff of Nottingham/Keith
- Andre Tricoteux: Massive Brawler/Argyle
- Graham Verchere: Young Apprentice
- Sinqua Walls: Sir Lancelot
- Robin Weigert: Bo Peepe
- Andrew J. West: Adult Henry
- Rebecca Wisocky: Madame Faustina
- Sam Witwer: Mr. Hyde
- Alex Zahara: King Midas
Foreign dubs
Japanese
- Sanae Kobayashi: Snow White/Mary Margaret Blanchard
- Rika Fukami: The Evil Queen/Regina Mills
- Kenjiro Tsuda: The Hunstman/August W. Booth
- Hiroshi Tsuchida: Captain Hook/Killian Jones
- Nobutoshi Canna: Baelfire/Neal Cassidy
- Atsuko Yuya: The Wicked Witch of the East/Zelena
- Shinpachi Tsuji: Dreamy and Grumpy/Leroy
- Tomoyuki Dan: Mad Hatter/Jefferson (season 1), Takuya Kirimoto (season 2 onwards)
- Ayumi Fujimura: Tinker Bell
- Takako Honda: Cruela de Vil
- Sayaka Kinoshita: Elsa
- Aya Endo: Anna
- Yuko Sasaki: Ingrid the Snow Queen/Sarah Fisher
