 | Naomi Watts als Ann Darrow |
 | Jack Black als Carl Denham |
 | Adrien Brody als Jack Driscoll |
 | Andy Serkis als Kong / Lumpy |
 | Colin Hanks als Preston |
 | Thomas Kretschmann als Captain Englehorn |
 | Jamie Bell als Jimmy |
 | Kyle Chandler als Bruce Baxter |
 | Evan Parke als Hayes |
 | Lobo Chan als Choy |
 | John Sumner als Herb |
 | Craig Hall als Mike |
 | Peter McKenzie als Venture Crew |
 | William Johnson als Manny |
 | David Pittu als Weston |
 | Mark Hadlow als Harry |
 | Geraldine Brophy als Maude |
 | David Dennis als Taps |
 | Pip Mushin als Zelman |
 | Jim Knobeloch als Thuggish Executive |
 | Ric Herbert als Sleazy Executive |
| Lee Donahue als Studio Guy's Assistant |
 | Tom Hobbs als Young Assistant |
 | Tiriel Mora als Fruit Vendor |
 | Jed Brophy als Venture Crew |
 | John Wraight als Venture Crew |
 | William Wallace als Venture Crew |
 | Frank Edwards als Venture Crew |
 | Crawford Thomson als Venture Crew |
| Richard Kavanagh als Venture Crew |
 | Stephen Hall als Venture Crew |
 | Joe Folau als Venture Crew |
 | Chic Littlewood als Old Security Guard |
| Samuel Taylor als Hooverville Child |
 | Lorraine Ashbourne als Theatre Actor |
 | Laura Surrich als New York Theatre Goer |
 | Katie Jackson als NY Child |
 | Michael Lawrence als Venture Crew |
 | Ray Woolf als Venture Crew - Helmsman |
| Eddie Campbell als Venture Crew - Crewman |
 | Greg Smith als Venture Crew |
 | Phil Grieve als Laughing Man |
| Matt Wilson als Photographer |
 | Jim McLarty als Photographer |
 | Latham Gaines als Photographer |
 | Camille Keenan als New York Citizen (uncredited) |
 | Peter Jackson als Biplane gunner |
 | Billy Jackson als NY Child |
| Peter Jackson | Director |
| Andrew Lesnie | Director of Photography |
| James Newton Howard | Original Music Composer |
| David Long | Original Music Composer |
| Mel Wesson | Original Music Composer |
| Jamie Selkirk | Editor |
| Victoria Burrows | Casting |
| John Hubbard | Casting |
| Liz Mullane | Casting |
| Dan Hubbard | Casting |
| Grant Major | Production Design |
| Terry Ryan | Costume Design |
| Brent Burge | Sound Designer |
| David Farmer | Sound Designer |
| Jan Blenkin | Producer |
| Carolynne Cunningham | Producer |
| Peter Jackson | Producer |
| Fran Walsh | Producer |
| Joel Fletcher | Animation |
| Sean Button | Stunts |
| Hugo Dominguez | Visual Effects |
| Joe Bleakley | Art Direction |
| Guy Williams | 3D Supervisor |
| Simon Bright | Art Direction |
| Dan Hennah | Supervising Art Director |
| Kristie Breslin | Art Department Coordinator |
| Chris Hennah | Art Department Manager |
| Eliza Godman | Assistant Costume Designer |
| Carolyn M. Fenton | Costume Supervisor |
| Gunner Ashford | Armorer |
| Victoria Sullivan | Script Supervisor |
| Merrin Ruck | Script Supervisor |
| Shona McCullagh | Choreographer |
| Peter Swords King | Hair Designer |
| Peter Swords King | Makeup Designer |
| Annette Wullems | Associate Producer |
| Philippa Boyens | Co-Producer |
| Eileen Moran | Co-Producer |
| Simon Bright | Set Decoration |
| Greg Cockerill | Set Decoration |
| Dan Hennah | Set Decoration |
| Jacqui Allen | Assistant Art Director |
| Jeremy Bennett | Conceptual Design |
| Ed Mulholand | Construction Coordinator |
| Colin Davidson | Construction Foreman |
| Daniel Aird | Greensman |
| Genevieve Cooper | Lead Painter |
| Carl Bellavia | Location Scout |
| Stephen Crene | Painter |
| Christopher Aitken | Sculptor |
| Miriam Bellard | Set Designer |
| Ben Milsom | Standby Painter |
| Rhys Duncan | Camera Operator |
| Colin Deane | First Assistant Camera |
| Tony Keddy | Key Grip |
| Darren Bradnock | Grip |
| David B. Nowell | Aerial Director of Photography |
| Simon Harding | Steadicam Operator |
| Pierre Vinet | Still Photographer |
| Susie Glass | Hairstylist |
| Corinne Bossu | Makeup Artist |
| Simon Ward | Set Costumer |
| Andy McLaren | Set Dresser |
| Kevin Anderton | Carpenter |
| Matt Aitken | CG Supervisor |
| Greg Butler | CGI Supervisor |
| Chris Walker | Craft Service |
| Julie Adams | Dialect Coach |
| Dan Lemmon | Digital Effects Supervisor |
| Pippa Anderson | Post Production Supervisor |
| Aaron Cubis | Projection |
| Pete Butters | Propmaker |
| Nick Weir | Property Master |
| Andy Buckley | Set Medic |
| Shane Cooper | Software Engineer |
| Hammond Peek | Sound Recordist |
| Karl Chisholm | Special Effects Coordinator |
| Peter Russell | Stand In |
| Ben Hall | Systems Administrators & Support |
| David Hollingsworth | Telecine Colorist |
| Collin Butrum | Transportation Coordinator |
| Anne Bruning | Unit Production Manager |
| Guy Adan | Unit Publicist |
| Peter Dillon | Utility Stunts |
| Matt Holmes | Visual Effects Editor |
| Carolynne Cunningham | First Assistant Director |
| Veronique Lawrence | Script Supervisor |
| Lynne Reed | Color Timer |
| Ray Beentjes | Dialogue Editor |
| David Birrell | First Assistant Editor |
| Huw Griffiths | Best Boy Electric |
| Tim Stratton | Electrician |
| Reg Garside | Gaffer |
| Taipua Adams | Lighting Technician |
| David Brown | Rigging Gaffer |
| Jared Connon | Location Manager |
| Hannah Clarke | Production Coordinator |
| Belindalee Hope | Production Manager |
| Philippa Wood | Publicist |
| Nigel Stone | ADR Supervisor |
| Corrin Ellingford | Boom Operator |
| Martin Kwok | First Assistant Sound Editor |
| Tim Starnes | Music Editor |
| Pete Anthony | Orchestrator |
| Chris Hiles | Production Sound Mixer |
| Matthew Lambourn | Sound Editor |
| Hayden Collow | Sound Effects Editor |
| Derek Casari | Sound Engineer |
| Mike Hopkins | Supervising Sound Editor |
| Atsushi Sato | Animation Supervisor |
| Robert Baldwin | Creature Design |
| Dan Akers | Digital Compositors |
| Jeremy Bennett | Visual Effects |
| Rebecca Downes | Visual Effects Coordinator |
| Vicki Galloway Weimer | Visual Effects Producer |
| Scott E. Anderson | Visual Effects Supervisor |
| Colin Alway | Sequence Leads |
| Julie Zavala Ron | Machinist |
| James Van Der Reyden | Motion Capture Artist |
| Jabez Olssen | Additional Editing |
| Bruce Emery | Dolby Consultant |
| Randy Link | Animation |
| Emily Ireland | Unit Manager |
| Peter Cobbin | Thanks |
| Alan Lee | Conceptual Design |
| Chris Anderson | Stunt Coordinator |
| Patrick Kalyn | Animation |
| Ed Hawkins | Digital Compositor |
| Hayley Atherton | Assistant Makeup Artist |
| Lucy Adams | Costume Assistant |
| Cilla Leckie | Costume Coordinator |
| Lucy McLay | Costumer |
| Paul Hambleton | Extras Dresser |
| Rick Findlater | Hair Supervisor |
| Richard Matthews | Additional Second Assistant Director |
| Stephanie Weststrate | Second Assistant Director |
| Skot Thomas | Second Second Assistant Director |
| Randall William Cook | Second Unit Director |
| Del Chatterton | Third Assistant Director |
| Darryl Longstaffe | Draughtsman |
| Mark Cameron Williams | Graphic Designer |
| Chris Guise | Title Designer |
| Polly McKinnon | ADR Editor |
| Brian Kahanek | ADR Mixer |
| Rick Canelli | ADR Recordist |
| Neil Aldridge | Assistant Dialogue Editor |
| Robyn McFarlane | Foley Recordist |
| Karen Harper | Vocals |
| Jonathan Roy Grindlay | Special Effects Assistant |
| Ross Anderson | Special Effects Technician |
| Heather Clarke | Additional Visual Effects |
| Joe Letteri | Senior Visual Effects Supervisor |
| Mario de Dios | VFX Artist |
| Alex Funke | VFX Director of Photography |
| Juliette Davis | Visual Effects Production Assistant |
| Marion Davey | Visual Effects Production Manager |
| Ryan Carey | Stunt Double |
| Noor Razzak | Assistant Grip |
| Dion Hartley | Best Boy Grip |
| Alys Rowe | Camera Trainee |
| Alexandra Bishop | Clapper Loader |
| Andrew Lambert | Data Wrangler |
| Kayne Asher | Dolly Grip |
| Mike Knudson | Focus Puller |
| Tony Monk | Helicopter Camera |
| Steve Allanson | Second Assistant Camera |
| Eric Leighton | Animation Director |
| William Dwelly | Animation Technical Director |
| Jamie Beard | Lead Animator |
| Keith Huggins | Senior Animator |
| Kelly Valentine Hendry | Casting Assistant |
| Mark Hawthorne | Assistant Editor |
| Nadia Diggins | Color Grading |
| Jan Kruse | Digital Colorist |
| Jayne Herrmann | Digital Intermediate Assistant |
| Holger Spill | Digital Intermediate Editor |
| Shara Hudson | Post Production Coordinator |
| Mathew Gordon | Location Assistant |
| Pete Anthony | Conductor |
| Stuart Michael Thomas | Music Consultant |
| Nigel Scott | Music Coordinator |
| Jim Weidman | Supervising Music Editor |
| Linda Klein-Nixon | Accountant |
| Jessica A. Gihon | Assistant Accountant |
| Aimee Aspinall | Assistant Production Coordinator |
| Aria Harrison | Assistant Script |
| Leigh van der Byl | CG Artist |
| Christine Arboit | Creature Technical Director |
| Tanya Blumstein | Dialogue Coach |
| Cyndi Ochs | Digital Effects Producer |
| Sarah Valentine | Extras Casting |
| Miranda Rivers | Extras Casting Coordinator |
| Peter Baustaedter | Matte Painter |
| Emily Griffiths | Production Assistant |
| Jeff Barnes | Production Executive |
| Jonny Doig | Production Runner |
| Sarah Milnes | Researcher |
| Evan Christie | Rotoscoping Artist |
| Ethan van der Ryn | Supervising Sound Editor |
| Christopher Boyes | Sound Re-Recording Mixer |
| Michael Semanick | Sound Re-Recording Mixer |
| Michael Hedges | Sound Re-Recording Mixer |
| Brian Van't Hul | Visual Effects Supervisor |
| Christian Rivers | Animation Director |
| Graham Binding | Animation |
| Carrie McLaughlin | Foley Artist |
| Dayna Grant | Stunts |
| Daniel Falconer | Creature Design |
| Philippa Boyens | Writer |
| Fran Walsh | Writer |
| Peter Jackson | Writer |
| Sally Eccleston | First Assistant Camera |
| Richard Taylor | Creature Technical Director |
| Armen Ksajikian | Musician |
| Steven Boyle | Makeup Effects |
| Mana Hira Davis | Stunts |
| Clint Elvy | Stunts |
| Morgan Evans | Stunts |
| Baz Karbouris | Stunts |
| Sebastian Foxx | Stunts |
| Kirk Maxwell | Stunt Coordinator |
| Tony Marsh | Stunt Double |
| David J. Muzzerall | Stunts |
| Steve Reinsfield | Stunts |
| Winham Hammond | Stunts |
| Jason Tahu | Stunts |
| Andrew Stehlin | Stunts |
| Tim Wong | Stunts |
| Mark Trotter | Stunts |
| Sharon Maxwell | Stunts |
| Min Windle | Stunt Double |
| Amanda Foubister | Stunts |
| Jonathan Costelloe | Stunts |
| Shane Rangi | Stunt Double |
| Merian C. Cooper | Original Concept |
| Edgar Wallace | Original Concept |
| Richard Taylor | Makeup Supervisor |
| Ann Robinson | Casting |
| Tom Johnson | Sound Re-Recording Mixer |
| Shane Dawson | Stunt Coordinator |
| Rodney Cook | Stunt Coordinator |
| Steve Ingram | Special Effects Coordinator |
| Dave Whitehead | Sound Designer |
| Hayden Collow | Sound Editor |
| Melanie Graham | Sound Editor |
| Katy Wood | Sound Editor |
| Justin Webster | Sound Editor |
| John Simpson | Foley Supervisor |
| Peter Mills | Foley Editor |
| Craig Tomlinson | Foley Editor |
| Ben Snow | Visual Effects Supervisor |
| George Murphy | Visual Effects Supervisor |
