 | James McAvoy als Arthur (voice) |
 | Hugh Laurie als Steve Claus (voice) |
 | Bill Nighy als Grandsanta (voice) |
 | Jim Broadbent als Santa (voice) |
 | Imelda Staunton als Mrs. Santa (voice) |
 | Ashley Jensen als Bryony (voice) |
 | Marc Wootton als Peter (voice) |
 | Laura Linney als North Pole Computer (voice) |
 | Eva Longoria als Chief De Silva (voice) |
 | Ramona Marquez als Gwen (voice) |
 | Michael Palin als Ernie Clicker (voice) |
 | Dominic West als Lead Elf #1 (voice) |
 | Joan Cusack als Lead Elf #2 (voice) |
 | Sanjeev Bhaskar als Lead Elf #3 (voice) |
 | Robbie Coltrane als Lead Elf #4 (voice) |
 | Rhys Darby als Lead Elf #5 (voice) |
 | Jane Horrocks als Lead Elf #6 (voice) |
 | Iain McKee als Lead Elf #7 (voice) |
 | Andy Serkis als Lead Elf #8 (voice) |
 | Peter Baynham als Elf (voice) |
 | Stewart Lee als Elf (voice) |
 | Kevin Eldon als Elf (voice) |
 | Danny John-Jules als Elf (voice) |
 | Bronagh Gallagher als Elf (voice) |
 | Rich Fulcher als Elf (voice) |
 | Cody Cameron als Elf (voice) |
| Kevin Cecil als Elf (voice) |
| Emma Kennedy als Elf (voice) |
 | Sarah Smith als Elf (voice) |
| Pete Jack als Elf (voice) |
| Seamus Malone als Elf (voice) |
 | Kris Pearn als Elf (voice) |
| Alan Short als Elf (voice) |
 | Adam Tandy als Elf (voice) |
 | Seeta Indrani als Elf (voice) |
| Finlay Duff als French Boy (voice) |
| Ryan Patrick Donahoe als Pedro (voice) |
 | Rich Hall als Idaho Man (voice) |
 | Clint Dyer als Reporter (voice) |
| Donnie Long als Reporter (voice) |
 | Jerry Lambert als N.O.R.A.D (voice) |
 | David Schneider als General (voice) |
 | Deborah Findlay als General (voice) |
| Ian Ashpitel als UNFITA OPS (voice) |
 | Julia Davis als UNFITA OPS (voice) |
 | Kerry Shale als UNFITA OPS (voice) |
 | Tamsin Greig als Additional Voices |
 | Alistair McGowan als Additional Voices |
 | David Menkin als Elf (voice, uncredited) |
 | Naomi McDonald als Elf (voice, uncredited) |
| Seeta Indrani als Indian Elf (voice, uncredited) |
| Alistair McGowan als Additional Voices (voice) |
| Tamsin Greig als Additional Voices (voice) |
| Alex McDowell | Visual Effects Design Consultant |
| Harry Gregson-Williams | Original Music Composer |
| John Carnochan | Editor |
| Peter Baynham | Screenplay |
| Peter Baynham | Co-Executive Producer |
| Peter DeSève | Character Designer |
| Chad Belteau | Rigging Gaffer |
| Chad Belteau | Lighting Artist |
| James Boyle | Sound Designer |
| David Mackie | Assistant Sound Editor |
| Peter Burgis | Foley |
| Arthur Graley | Foley Editor |
| Aaron Pfau | Animation |
| Chris Juen | Co-Producer |
| Martin Tillman | Musician |
| Peter Lord | Producer |
| David Sproxton | Producer |
| Peter Gleaves | Sound Mixer |
| Sarah Crowe | Casting |
| Barry Cook | Co-Director |
| Craig Simpson | 3D Tracking Layout |
| Chris Bacon | Additional Soundtrack |
| Jericca Cleland | Cinematography |
| Henrik Tamm | Visual Development |
| Ryan Gilleland | Production Manager |
| Andrew Stirk | Dialogue Editor |
| Paul Bolger | Storyboard Designer |
| Dafydd Archard | Sound Mixer |
| Michael Solinger | Post-Production Manager |
| Sarah Smith | Screenplay |
| Sarah Smith | Director |
| Julian Slater | Supervising Sound Editor |
| David Buckley | Additional Soundtrack |
| Troy Quane | Storyboard Designer |
| Michael Kurinsky | Key Animation |
| Olivier Adam | Art Direction |
| Sergio Casas | Color Designer |
| Bruce White | Musician |
| Kris Pearn | Storyboard Designer |
| Carla Shelley | Producer |
| Shaofu Zhang | Animation |
| Osnat Shurer | Consulting Producer |
| Till Nowak | Visual Development |
| Yves Barre | Costume Design |
| Tim Watts | Art Direction |
| Tim Watts | Animation |
| Halli Cauthery | Additional Soundtrack |
| Eric Huang | Animation |
| Bjorn-Erik Aschim | Visual Development |
| George Hull | Visual Development |
| Jason Swanscott | Foley |
| Robert Houston | Music Editor |
| Barnaby Smyth | Foley |
| Tony Lewis | Music Editor |
| Johnathan Rush | Sound Mixer |
| Anthony Di Ninno | Layout |
| Anthony Di Ninno | 3D Tracking Layout |
| Laurent Ben-Mimoun | Visual Development |
| Ben Meechan | Sound Effects Editor |
| Dan Morgan | Supervising ADR Editor |
| Dan Morgan | Supervising Dialogue Editor |
| Gregory Fangeaux | Set Designer |
| Kirsty Whalley | Music Editor |
| Doug Cooper | Sound Re-Recording Mixer |
| Mandy Tankenson | Digital Producer |
| Mike Prestwood Smith | Sound Re-Recording Mixer |
| Simon Ellegaard | Sound Re-Recording Mixer |
| Andrea King | Foley |
| Meri Gavin | Music Editor |
| Rob Farris | Digital Intermediate |
| Patrick Malone | Digital Intermediate |
| Joseph Stracey | Sound Effects Editor |
| Laurent Treherne | Technical Supervisor |
| Victoria Mowlam | Assistant Production Manager |
| Armand Serrano | Visual Development |
| Daniele Zannone | Animation |
| Buck Lewis | Character Designer |
| Matt Jones | Storyboard Artist |
| Howard London | Sound Mixer |
| Gregory Galliani | Lead Character Designer |
| Joel Foster | Animation |
| Luis Grané | Character Designer |
| Brian Blasiak | Lighting Director |
| Christophe Lourdelet | Character Designer |
| Jean-Paul Vermeulen | Storyboard Designer |
| Seamus Malone | Supervising Animator |
| Dan Haring | Lighting Artist |
| Dan Haring | Lighting Director |
| Shad Bradbury | Animation |
| Robert Fox | Animation |
| Philip Rudolph | Animation |
| Mark Anthony Austin | Animation |
| Alan Short | Supervising Animator |
| Geoff Stradling | Orchestrator |
| Sue Houston Safianoff | Animation |
| Boris Hiestand | Supervising Animator |
| Peter Cobbin | Scoring Mixer |
| Michelle Dean | Cloth Setup |
| Michelle Dean | Hair Setup |
| Eric Provan | Animation |
| Hunter Athey | Animation |
| Stéphane Couture | Animation |
| Peter Boyer | Orchestrator |
| Nick Del-Molino | Sound Mixer |
| James Cooper | Editor |
| Jennifer Hammond | Orchestrator |
| Aaron Jonas | Animation |
| Jennifer Avery | Visual Effects Coordinator |
| Tom Doggart | Assistant Editor |
| Gregory F. Plotts | Assistant Editor |
| Adam Horley | ADR Recordist |
| Stuart Mintz | Visual Effects |
| Oliver Carroll | Draughtsman |
| David B. Menkes | Lighting Director |
| Alastair Grimshaw | Visual Effects Editor |
| Alexander Snow | Animation |
| Carolyn Vale | Animation |
| Simon Diggins | ADR Recordist |
| Mark Appleby | Sound Mixer |
| Mark DeSousa | Cloth Setup |
| Mark DeSousa | Hair Supervisor |
| Becky Bentham | Music Supervisor |
| Roger Vizard | Animation |
| Ethan Hurd | Animation |
| Jess Jackson | Storyboard Designer |
| Cheryl Abood | Co-Executive Producer |
| Benoit Bargeton | Animation |
| Patrick Rossano | Animation |
| Corey Turner | Stereoscopic Coordinator |
| Doug Ikeler | Visual Effects Supervisor |
| Ladd McIntosh | Orchestrator |
| Rob Bredow | Chief Technician / Stop-Motion Expert |
| Timothy Loughran | Animation Production Assistant |
| Timothy Loughran | Assistant Production Manager |
| Mark Berrow | Musician |
| Tim Browning | Visual Effects Designer |
| Louis Elman | ADR Voice Casting |
| Evgeni Tomov | Production Design |
| Rahul Dabholkar | Lead Animator |
| Steve Mair | Musician |
| Stephen Nixon | Assistant Production Manager |
| Terry Ziegelman | Lighting Director |
| Michael Killoren | Associate Producer |
| Steve Pegram | Producer |
| Chrissy Callahan | Visual Effects Coordinator |
| Zak Melemendjian | Dialogue Editor |
| Kevin Penney | Sound Effects Editor |
| Theresa Bentz | Production Manager |
| Jordan Soles | Production Manager |
| Keith Partridge | Foley |
| Abigail Barbier | ADR Voice Casting |
| Martim Crawford | Dialogue Editor |
| Noriaki Kaneko | Motion Capture Artist |
| Stefan Klauss | Animation |
| Kevin Kitchel | Visual Effects Technical Director |
| Roger Liu | Visual Effects |
| Kent Estep | Digital Compositors |
| Daniel Kruse | Lighting Director |
| David Peacock | ADR Recordist |
