 | Gerard Butler als King Leonidas |
 | Lena Headey als Gorgo |
 | Dominic West als Theron |
 | David Wenham als Dilios |
 | Vincent Regan als Captain |
 | Michael Fassbender als Stelios |
 | Tom Wisdom als Astinos |
 | Andrew Pleavin als Daxos |
 | Andrew Tiernan als Ephialtes |
 | Rodrigo Santoro als Xerxes |
 | Giovani Cimmino als Pleistarchos |
 | Stephen McHattie als Loyalist |
 | Greg Kramer als Ephor #1 |
 | Alex Ivanovici als Ephor #2 |
 | Kelly Craig als Oracle Girl |
 | Eli Snyder als Leonidas @ 7/8 yrs |
 | Tyler Neitzel als Leonidas @ 15 yrs |
 | Tim Connolly als Leonidas' Father |
 | Marie-Julie Rivest als Leonidas' Mother |
 | Sebastian St. Germain als Fighting Boy (12 years old) |
 | Peter Mensah als Messenger |
 | Arthur Holden als Partisan |
 | Michael Sinelnikoff als Elder Councilman |
 | John Dunn-Hill als Councilman |
| Dennis St John als Spartan Baby Inspector |
 | Neil Napier als Spartan with Stick |
 | Dylan Smith als Sentry #1 |
 | Maurizio Terrazzano als Sentry #2 |
| Robert Paradis als Spartan General |
 | Kwasi Songui als Persian |
 | Alexandra Beaton als Burned Village Child |
| Frédéric Smith als Statesman |
| Loucas Minchillo als Spartan Baby A |
| Nicholas Minchillo als Spartan Baby B |
| Tom Rack als Ephor #3 |
 | David Francis als Ephor #4 |
 | James Bradford als Ephor #5 |
 | Andrew Shaver als Free Greek-Potter |
 | Robin Wilcock als Free Greek-Sculptor |
 | Kent McQuaid als Free Greek-Blacksmith |
 | Marcel Jeannin als Free Greek-Baker |
| Jere Gillis als Spartan General #2 |
 | Jeremy Thibodeau als Spartan Boy |
 | Tyrone Benskin als Persian Emissary |
 | Robert Maillet als Uber Immortal (Giant) |
 | Patrick Sabongui als Persian General |
| Leon Laderach als Executioner |
| Dave Lapommeray als Persian General Slaughtered |
| Vervi Mauricio als Armless Concubine |
 | Charles Papasoff als Blacksmith |
 | Isabelle Champeau als Mother at Market |
| Veronique-Natale Szalankiewicz als Daughter at Market (3/5 years old) |
| Maéva Nadon als Girl at Market |
| David Thibodeau als Boy #1 at Market |
 | David Schaap als Potter |
 | Jean Michel Paré als Other Council Guard |
 | Stewart Myiow als Persian General |
| Andreanne Ross als Concubine |
| Sara Giacalone als Concubine |
| Ariadne Bourbonnière als Kissing Concubine |
| Isabelle Fournel als Kissing Concubine |
| Sandrine Merette-Attiow als Contortionist |
 | Elisabeth Etienne als Dancer |
| Danielle Hubbard als Dancer |
| Ruan Vibegaard als Dancer |
 | Geneviève Guilbault als Slave Girl |
| Bonnie Mak als Slave Girl |
| Amélie Sorel als Slave Girl |
| Caroline Aspirot als Slave Girl |
| Gina Gagnon als Slave Girl |
| Tania Trudel als Slave Girl |
| Stéphanie Aubry als Slave Girl |
| Mercedes Leggett als Slave Girl |
| Stephania Gambaroff als Slave Girl |
| Chanelle Lamothe als Slave Girl |
| Sabrina-Jasmine Guilbault als Slave Girl |
| Manny Cortez Tuazon als Transsexual (Asian) #1 |
| Cindy als Transsexual (Asian) #2 |
 | Atif Y. Siddiqi als Transsexual (Arabian) #3 |
| Camille Rizkallah als Giant with Arrow |
| Trudi Hanley als Long Neck Woman |
| Neon Cobran als Litter Bearer/Slave |
 | Gary A. Hecker als Ubermortal Vocals (voice) |
| Ben Waisbren | Executive Producer |
| Thomas Tull | Executive Producer |
| Larry Fong | Director of Photography |
| William Hoy | Editor |
| Craig J. Flores | Executive Producer |
| Michael B. Gordon | Screenplay |
| Gianni Nunnari | Producer |
| Kristy Carlson | Casting |
| Nicolas Lepage | Art Direction |
| Zack Snyder | Director |
| Kurt Johnstad | Screenplay |
| Carrie Hilton | Casting |
| Bernie Goldmann | Producer |
| William Fay | Executive Producer |
| Frank Miller | Executive Producer |
| Deborah Snyder | Executive Producer |
| Zack Snyder | Screenplay |
| Andrea Kenyon | Casting |
| Jeffrey Silver | Producer |
| Scott Mednick | Executive Producer |
| Jean-Pierre Paquet | Art Direction |
| Tyler Bates | Original Music Composer |
| Paul Hotte | Set Decoration |
| James D. Bissell | Production Design |
| Scott Wheeler | Makeup Department Head |
| Philippe Lord | Set Decoration |
| Lyse Pomerleau | Costume Supervisor |
| Michael Wilkinson | Costume Design |
| Isabelle Guay | Supervising Art Director |
| Thierry Delattre | Visual Effects Supervisor |
| Hiroshi Yada | Sculptor |
| Martin Laneuville | Greensman |
| Derek Vanderhorst | Sound Designer |
| Chris Watts | Visual Effects Supervisor |
| Stéphane Lefebvre | Stunt Coordinator |
| Brent Lambert | Set Designer |
| Michael Meagher | Visual Effects Producer |
| Lucie Fournier | Sculptor |
| Stephen Gilbert | Special Effects Coordinator |
| Greg Strause | Visual Effects Supervisor |
| Charlotte Raybourn | Art Department Coordinator |
| Derek Vanderhorst | Sound Effects Editor |
| Chad Malbon | Visual Effects Producer |
| Ray McIntyre Jr. | Visual Effects Supervisor |
| Scott A. Hecker | Supervising Sound Editor |
| Nina Fallon | Visual Effects Producer |
| Andy Fowler | Visual Effects Producer |
| Alex Touikan | Set Designer |
| Daniel Leduc | Visual Effects Producer |
| Ismat Zaidi | Visual Effects Producer |
| Darrell Hall | Music Editor |
| Daniel Matthews | Transportation Coordinator |
| Helene Lamarre | Art Department Coordinator |
| Kirsty Millar | Visual Effects Supervisor |
| Vincent Gingras-Liberali | Set Designer |
| Thomas Nittmann | Visual Effects Producer |
| Persis Reynolds | Visual Effects Producer |
| Mandy Tankenson | Visual Effects Producer |
| Keith Christensen | Sculptor |
| Nadine Thouin | Choreographer |
| George McCarthy | Visual Effects Editor |
| Edson Williams | Visual Effects Supervisor |
| Pierre Blondin | Location Manager |
| Takashi Seida | Still Photographer |
| Daniel Sauvé | Steadicam Operator |
| Frédéric Amblard | Set Designer |
| Marc Chow | Sculptor |
| Gayle Busby | Visual Effects Producer |
| Jeremy Hunt | Visual Effects Supervisor |
| Daniel Sauvé | Camera Operator |
| Collin Butrum | Transportation Coordinator |
| Richard Martin | Visual Effects Supervisor |
| Colin Strause | Visual Effects Supervisor |
| John Lewin | Gaffer |
| François Daignault | Camera Operator |
| Jerie McBride | Studio Teachers |
| Hugo Dominguez | Visual Effects |
| David Leitch | Stunts |
| Tamara Notcutt | Casting Associate |
| Tim Rigby | Utility Stunts |
| Tad Griffith | Stunts |
| Tad Griffith | Utility Stunts |
| Tim Rigby | Stunts |
| Tad Griffith | Stunt Coordinator |
| Zack Davis | ADR Supervisor |
| Maxime Ferland | Boom Operator |
| Michael J. Broomberg | Foley Artist |
| Denis Hamel | Property Master |
| Chris Jenkins | Sound Re-Recording Mixer |
| Frank A. Montaño | Sound Re-Recording Mixer |
| Jeff Rosen | ADR Editor |
| Jon Mete | Sound Effects Editor |
| Kyle Rochlin | Foley Mixer |
| Kimi Webber | Script Supervisor |
| David Werntz | Sound Effects Editor |
| Eric A. Norris | Supervising Sound Effects Editor |
| Simon Chamberland | Property Master |
| Frederick H. Stahly | Dialogue Editor |
| Shawn Sykora | Foley Editor |
| Brad North | Sound Effects Editor |
| Miguel Rivera | Dialogue Editor |
| Mark Pappas | Foley Supervisor |
| John 'D.J.' Des Jardin | Visual Effects Supervisor |
| Sylvain Dupuis | Second Assistant "A" Camera |
| Michelle Côté | Hairstylist |
| Christophe Giraud | Makeup Artist |
| Gilles Fortier | Rigging Gaffer |
| Jennifer Anderson | Costume Assistant |
| Pierre Beaulieu | Lighting Technician |
| Richard Boucher | Dolly Grip |
| Sandrin Olivier | Rigging Grip |
| Martine Gagnon | Costume Assistant |
| David Scott | Makeup Artist |
| Alain Masse | Key Grip |
| Annick Legout | Assistant Makeup Artist |
| Réjean Forget | Key Hair Stylist |
| Nathalie Trépanier | Key Makeup Artist |
| Richard Alger | Electrician |
| Martine Vincent | Grip |
| Eric Aubin | Second Assistant "B" Camera |
| Jocelyne Bellemare | Key Makeup Artist |
| Patrice Lapointe | Dolly Grip |
| Stephen Wells | Dolly Grip |
| Yves Drapeau | First Assistant Camera |
| Mathieu Price | Grip |
| Robert Lapierre Jr. | Grip |
| Alain Bisson Doyal | Grip |
| Christian Chabot | Lighting Technician |
| David Uloth | Techno Crane Operator |
| Audrey L. Anzures | Hair Department Head |
| Marco Venditto | Rigging Gaffer |
| Gillian Chandler | Assistant Makeup Artist |
| David Dinel | Best Boy Grip |
| Melina Di Cristo | Assistant Makeup Artist |
| Adam Forman | Tattooist |
| Robert B. Baylis | Key Grip |
| Jean-Jacques Dion | Hairstylist |
| Christian Lemay | Assistant Camera |
| Jean Courteau | Chief Lighting Technician |
| Noel Donnellon | Epk Camera Operator |
| Caroline Béliveau | Second Assistant Camera |
| Mirosław Baszak | Second Unit Director of Photography |
| Julie Garceau | Video Assist Operator |
| Catherine Lavoie | Assistant Makeup Artist |
| Larysa Chernienko | Makeup Artist |
| William R. Dalgleish | First Assistant Camera |
| Stephane Boisvert | Generator Operator |
| Christine Bieselin Clark | Assistant Costume Designer |
| Jeff Scott | Best Boy Electrician |
| Tereska Gesing | Dresser |
| Rosalie Clermont-Bilodeau | Wardrobe Assistant |
| Catherine Gélinas | Dresser |
| Henri Aubertin | Key Dresser |
| Yolanda Santosa | Title Designer |
| Simonetta Mariano | Costume Illustrator |
| Julie Amyot | Dresser |
| Pascal Gauthier | Key Dresser |
| Garson Yu | Title Designer |
| Azalia Snail | Costumer |
| Caroline Lachance | Art Department Production Assistant |
| Dan Milligan | Concept Artist |
| Guy Pigeon | Set Designer |
| Louis Frederic Denomme | Set Dresser |
| Marco Nero | Concept Artist |
| Marco Lavallée | Set Dresser |
| Mark Alan Yates | Storyboard Artist |
| Andrea Wertheim | Post Production Supervisor |
| Richard Bennett | Storyboard Artist |
| Martin Walters | First Assistant Director |
| Meinert Hansen | Concept Artist |
| Bret St. Clair | CG Supervisor |
| Cristin Pescosolido | Digital Effects Supervisor |
| Todd Baillere | Post Production Consulting |
| Yoshiya Yamada | Modelling Supervisor |
| Ana Marie Cruz | Visual Effects Coordinator |
| Jean-Francois Morissette | 3D Tracking Layout |
| Erik Liles | Compositing Supervisor |
| Lisa Marra | Visual Effects Coordinator |
| Jake Morrison | Digital Effects Supervisor |
| Michael Cozens | Lead Animator |
| Alejandro Valdés-Rochin | Visual Effects Assistant Editor |
| Ryan Zuttermeister | Visual Effects Coordinator |
| Marie-Claude Aubry | Visual Effects Coordinator |
| Andreas Nehls | 3D Modeller |
| Chris Capell | Visual Effects Coordinator |
| Mo Henry | Negative Cutter |
| Stephen Coren | CG Supervisor |
| Derek Wentworth | Digital Effects Supervisor |
| P. Whitney Gearin | Visual Effects Coordinator |
| Martin Zwanzger | Compositing Artist |
| Julie Breton | Extras Casting |
| Stephan Schweizer | Compositing Artist |
| Anouk Deveault-Moreau | Visual Effects Coordinator |
| Caitlin McKenna | ADR Voice Casting |
| Stefan Sonnenfeld | Colorist |
| Des Carey | Digital Intermediate Producer |
| Dylan Carter | Online Editor |
| Joshua Cordes | Animation Supervisor |
| Grant Freckelton | Visual Effects Art Director |
| Missy Papageorge | Digital Intermediate Producer |
| Jayne Herrmann | Visual Effects Coordinator |
| Danielle Rubin | Visual Effects Coordinator |
| Karl Rogovin | Visual Effects Coordinator |
| John Bober | Transportation Captain |
| Sergio Ayrosa | Compositing Artist |
| Tyler Foell | Digital Effects Supervisor |
| Chadi Abo | Pre-Visualization Supervisor |
| Marie-Chantale Savard-Côté | Visual Effects Coordinator |
| Richard Cote | Visual Effects Coordinator |
| Ryan Kuba | Visual Effects Coordinator |
| Lindsey Hayes Kroeger | Additional Casting |
| David Rapaport | Additional Casting |
| Bill Holley | Colorist |
| Melissa Remenarich | First Assistant Editor |
| Serge Lavigueur | Armory Coordinator |
| Julia Reinhard | Compositing Artist |
| Cesar Dacol Jr. | Modelling Supervisor |
| Randi Wells | Casting Associate |
| Elizabeth Ross | Assistant Editor |
| Éric Gaudry | Colorist |
| Yanick Wilisky | CG Supervisor |
| Dean Gula | Visual Effects Coordinator |
| Shawn Roberts | Casting Assistant |
| Jacques Langlois | Pyrotechnician |
| Nerys Lincoln | 3D Artist |
| Danielle Plantec | CG Supervisor |
| Chris Holmes | Compositing Supervisor |
| Nathan Gunn | Assistant Editor |
| Wesley Coller | Associate Producer |
| Chris Wells | CG Supervisor |
| Clay Staub | Second Unit Director |
| Arild Anfinnsen | VFX Artist |
| Marie-Maude Grenier | Costumer |
| Frank Miller | Novel |
| Doug Chapman | Stunts |
| Miguel Ortega | Modeling |
| Neal Sopata | VFX Artist |
| Chad Stahelski | Stunt Coordinator |
| Dane Farwell | Stunts |
| Clint Carleton | Stunts |
| Jean Frenette | Stunts |
