 | James McAvoy als Charles Xavier / Professor X |
 | Michael Fassbender als Erik Lehnsherr / Magneto |
 | Kevin Bacon als Sebastian Shaw / Black King |
 | Rose Byrne als Moira MacTaggert |
 | Jennifer Lawrence als Raven Darkholme / Mystique |
 | Nicholas Hoult als Hank McCoy / Beast |
 | Lucas Till als Alex Summers / Havok |
 | January Jones als Emma Frost / White Queen |
 | Jason Flemyng als Azazel |
 | Caleb Landry Jones als Sean Cassidy / Banshee |
 | Zoë Kravitz als Angel Salvadore / Tempest |
 | Edi Gathegi als Armando Muñoz / Darwin |
 | Álex González als Janos Quested / Riptide |
 | Oliver Platt als Man in Black Suit |
 | Matt Craven als CIA Director McCone |
 | Laurence Belcher als Charles Xavier (12 Years) |
 | Bill Milner als Young Erik |
 | Morgan Lily als Young Raven (10 yrs) |
 | Beth Goddard als Mrs. Xavier |
 | Éva Magyar als Edie Lensherr |
 | Corey Johnson als Chief Warden |
 | Demetri Goritsas als Levene |
 | Glenn Morshower als Colonel Hendry |
 | Don Creech als William Stryker |
 | James Remar als US General |
 | Ludger Pistor als 1st German / Pig Farmer |
 | Wilfried Hochholdinger als 2nd German / Tailor |
 | Greg Kolpakchi als Russian Soldier No. 1 |
 | Andrei Zayats als Russian Soldier No. 2 |
 | Rade Šerbedžija als Russian General |
 | Ray Wise als Secretary of State |
 | Michael Medeiros als Political Officer |
 | Olek Krupa als Soviet Captain |
 | Yuri Naumkin als Soviet Fire Control |
 | Gene Farber als Soviet Radioman |
 | David Agranov als Soviet NCO |
 | Katrine De Candole als Swiss Receptionist |
 | James Faulkner als Swiss Bank Manager |
 | Annabelle Wallis als Co-Ed |
 | Juan Herrera als Airport Worker |
 | Greg Savage als Coast Guard |
 | Jarid Faubel als US Fire Control Officer |
 | Gregory Cox als Dr. Leigh |
 | Josh Cohen als Junior Agent |
 | David Crow als Weasley Agent |
 | Kieran Patrick Campbell als Little Boy |
 | Sasha Pieterse als Teenage Girl |
 | Brendan Fehr als Communications Officer |
 | Michael Ironside als Captain |
 | Jason Beghe als XO |
| Venya Manzyuk als Lt. Commander |
 | Tony Curran als Man In Black Suit Agent |
 | Randall Batinkoff als Man In Black Suit Agent |
 | Peter Stark als Storm Trooper No. 1 |
 | Leonard Redlich als Storm Trooper No. 2 |
 | Carlos Peres als German Bartender |
| Sean Brown als Russian Chopper Pilot |
 | Neil Fingleton als Russian General's Bodyguard 1 |
| Marios als Russian General's Bodyguard 2 |
 | Georg Nikoloff als Mr. Lensherr (Erik's Dad) |
 | Arthur Darbinyan als Aral Sea Captain |
 | John F. Kennedy als Himself (archive footage) |
 | Hugh Jackman als Logan / Wolverine (uncredited) |
 | Rebecca Romijn als Mystique - Older (uncredited) |
 | David Joseph Martinez als Cuban General #1 (uncredited) |
 | Johnny Otto als Russian Soldier (uncredited) |
 | Josh Ramsay als Banshee (voice) (uncredited) |
| Bryan Singer | Producer |
| Simon Kinberg | Producer |
| Lauren Shuler Donner | Producer |
| Matthew Vaughn | Director |
| Marc Homes | Art Direction |
| Adam O'Neill | Art Direction |
| Wendy M. Craig | Costume Supervisor |
| Eddie Hamilton | Editor |
| Chris Seagers | Production Design |
| Steve Cooper | Art Direction |
| Jeremy Rich | Casting |
| Lucinda Syson | Casting |
| Grant Armstrong | Art Direction |
| Alex Cameron | Art Direction |
| Sue Whitaker | Art Direction |
| James Hambidge | Art Direction |
| Sammy Sheldon | Costume Design |
| Paul Booth | Art Direction |
| Alan Gilmore | Art Direction |
| Sonja Klaus | Set Decoration |
| Henry Jackman | Music |
| Nicole Young | Costume Supervisor |
| John Mathieson | Director of Photography |
| Lee Smith | Editor |
| Erin Boyd | Set Decoration |
| John Frankish | Art Direction |
| Tom Frohling | Art Direction |
| Joe Howard | Art Direction |
| Roger Mussenden | Casting |
| Marc Fisichella | Supervising Art Director |
| Dawn Swiderski | Supervising Art Director |
| John King | Supervising Art Director |
| Gregory Goodman | Producer |
| Tyler DeLisle | Lighting Artist |
| Justin Hammond | Lighting Technician |
| Sachin Bangera | VFX Artist |
| Matt Weaver | Animation |
| Guy Williams | Visual Effects Supervisor |
| Frank Reina | Production Office Assistant |
| Jessie Graff | Utility Stunts |
| Ian Blum | Animation |
| Stan Lee | Executive Producer |
| Tom Struthers | Stunt Coordinator |
| John Dykstra | Visual Effects Supervisor |
| Bryan Singer | Story |
| David Reid | Line Producer |
| Chris Dowell | Post Production Supervisor |
| Josh McLaglen | Executive Producer |
| Sheldon Turner | Story |
| Jason Taylor | Co-Producer |
| Adam Bohling | Line Producer |
| Tarquin Pack | Executive Producer |
| Jeremiah Samuels | Line Producer |
| Jerad Marantz | Character Designer |
| Archie Campbell-Baldwin | Assistant Set Decoration |
| Chris Cleek | Assistant Art Director |
| Jane Goldman | Screenplay |
| Zack Stentz | Screenplay |
| Matthew Vaughn | Screenplay |
| Ashley Miller | Screenplay |
| Gregory Goodman | Unit Production Manager |
| Janine Modder | Unit Production Manager |
| Kim H. Winther | First Assistant Director |
| Josh Robertson | First Assistant Director |
| Lee Tailor | Second Assistant Director |
| Brian Smrz | Second Unit Director |
| Denise Davis | Visual Effects Producer |
| Jeff Habberstad | Stunt Coordinator |
| Robin Mulcahy Fisichella | Production Supervisor |
| Cheryl Gould Strang | Leadman |
| Andrew Tapper | Graphic Designer |
| Giles Asbury | Storyboard Artist |
| Tony Chance | Storyboard Artist |
| Jennifer Bowes | Art Department Coordinator |
| Cliff Zimowski | Art Department Coordinator |
| Pippa Needs | Art Department Coordinator |
| Martin Hume | Camera Operator |
| Daniele Massaccesi | Camera Operator |
| David Cozens | First Assistant Camera |
| Chris Bain | First Assistant Camera |
| Murray Close | Still Photographer |
| Simon Hayes | Production Sound Mixer |
| Robin Johnson | Boom Operator |
| Arthur Fenn | Boom Operator |
| Terry Woods | Property Master |
| Brian Seccombe | Assistant Property Master |
| Annie Penn | Script Supervisor |
| Diane Durant | Script Supervisor |
| Tim Gomillion | Sound Recordist |
| John A. Larsen | Supervising Sound Editor |
| Craig Berkey | Supervising Sound Editor |
| Chris Burdon | Sound Re-Recording Mixer |
| Ron Bartlett | Sound Re-Recording Mixer |
| Doug Hemphill | Sound Re-Recording Mixer |
| Matthew Collinge | Sound Designer |
| Rob Prynne | Sound Designer |
| Craig Berkey | Sound Designer |
| John Morris | Sound Effects Editor |
| Wayne Lemmer | Sound Effects Editor |
| David Grimaldi | Sound Effects Editor |
| Bob Kellough | Sound Effects Editor |
| Danny Sheehan | Supervising Dialogue Editor |
| Michael Maroussas | Dialogue Editor |
| R.J. Kizer | Supervising ADR Editor |
| Donald Sylvester | ADR Editor |
| Laura Graham | ADR Editor |
| John Murray | Foley Supervisor |
| Scott Curtis | Foley Editor |
| Doug Jackson | Foley Editor |
| Bruce Tanis | Foley Editor |
| Christopher Flick | Foley Editor |
| Randall Guth | First Assistant Sound Editor |
| Blake R. Cornett | Assistant Sound Editor |
| Gavin Rose | Assistant Sound Editor |
| Charleen Richards-Steeves | ADR Mixer |
| David Lucarelli | ADR Recordist |
| Derek Casari | ADR Engineer |
| Dan O'Connell | Foley Artist |
| John T. Cucci | Foley Artist |
| James Ashwill | Foley Mixer |
| Richard Duarte | Foley Mixer |
| Johnny Gidcomb | ADR Voice Casting |
| George Chavez | Color Timer |
| Gary Burritt | Negative Cutter |
| Loan Phan | Digital Intermediate Producer |
| Lisa Tutunjian | Digital Intermediate Editor |
| David Smith | Gaffer |
| Andrew Watson | Rigging Gaffer |
| Stewart Monteith | Best Boy Electric |
| Billy Gamble | Best Boy Electric |
| Guy Minoli | Best Boy Electric |
| John Flemming | Key Grip |
| Derek Russell | Best Boy Grip |
| Keith Manning | Dolly Grip |
| Jack Flemming | Dolly Grip |
| Nic Cupac | Dolly Grip |
| Ralph Scherer | Dolly Grip |
| Richard Sale | Assistant Costume Designer |
| Sharon McCormack | Tailor |
| Bruno de Santa | Set Costumer |
| Stephanie Paul | Set Costumer |
| Risa Garcia | Set Costumer |
| Miloslav Skorepa | Set Costumer |
| Dale DeStefani | Construction Coordinator |
| Spiro Razatos | Second Unit Director |
| Stacy Mann | Unit Publicist |
| Jess Platt | Dialogue Coach |
| Daniel Pinder | Supervising Music Editor |
| John Finklea | Music Editor |
| Tom Cohen | Associate Producer |
| Alexander Witt | Second Unit Director |
| Josh McLaglen | First Assistant Director |
| Steve Burgess | First Assistant Camera |
| Sian Milne | Stunt Double |
| Alicia Vela-Bailey | Stunt Double |
| Garrett Warren | Utility Stunts |
| Hiroshi Mori | Visual Effects |
| Zack Duhame | Stunts |
| Marc Mailley | Stunts |
| Duffy Gaver | Stunts |
| Duffy Gaver | Utility Stunts |
| Joey Box | Utility Stunts |
