 | Max Records als Max |
 | Catherine Keener als Mom |
 | James Gandolfini als Carol (voice) |
 | Lauren Ambrose als KW (voice) |
 | Catherine O'Hara als Judith (voice) |
 | Forest Whitaker als Ira (voice) |
 | Chris Cooper als Douglas (voice) |
 | Paul Dano als Alexander (voice) |
 | Spike Jonze als Bob (voice) / Terry (voice) |
 | Pepita Emmerichs als Claire |
 | Mark Ruffalo als The Boyfriend |
| Max Pfeifer als Claire's Friend |
| Madeleine Greaves als Claire's Friend |
| Joshua Jay als Claire's Friend |
 | Ryan Corr als Claire's Friend |
 | Steve Mouzakis als Teacher |
 | Michael Berry Jr. als The Bull (voice) |
| Vincent Crowley als Carol Suit Performer |
| Sonny Gerasimowicz als Alexander Suit Performer |
 | Nick Farnell als Judith Suit Performer |
| Sam Longley als Ira Suit Performer |
 | Angus Sampson als The Bull Suit Performer |
 | Mark McCracken als The Bull Additional Suit Performer |
 | John Leary als Douglas Suit Performer |
 | Alice Parkinson als KW Suit Performer |
| Garon Michael als KW Additional Suit Performer |
| James Epinfaniou als Additional Max Performer |
| Joshua Evans als Additional Max Performer |
| Tess Grimshaw Lloyd als Additional Max Performer |
| Lucas Haynes als Additional Max Performer |
| Nathan Veal als Additional Max Performer |
 | Skyler Brigmann als Double: Max (uncredited) |
 | Kalia Prescott als Max's Classmate (uncredited) |
| Spike Jonze | Director |
| Spike Jonze | Screenplay |
| Dave Eggers | Screenplay |
| Maurice Sendak | Author |
| Tom Hanks | Producer |
| John B. Carls | Producer |
| Gary Goetzman | Producer |
| Vincent Landay | Producer |
| Maurice Sendak | Producer |
| Ren Klyce | Sound Designer |
| Ren Klyce | Sound Re-Recording Mixer |
| Lance Acord | Director of Photography |
| Thomas Tull | Executive Producer |
| Laraib Atta | Visual Effects |
| Bruce Berman | Executive Producer |
| Natalie Farrey | Associate Producer |
| Jon Jashni | Executive Producer |
| Catherine Keener | Associate Producer |
| Scott Mednick | Executive Producer |
| Emma Wilcockson | Associate Producer |
| Carter Burwell | Original Music Composer |
| Karen O | Original Music Composer |
| James Haygood | Editor |
| Eric Zumbrunnen | Editor |
| Skyler Brigmann | Acting Double |
| Miranda July | Thanks |
| K.K. Barrett | Production Design |
| Lucinda Thomson | Art Direction |
| Jeffrey Thorp | Supervising Art Director |
| Lisa Thompson | Set Decoration |
| Casey Storm | Costume Design |
| Malcolm Fife | Sound Effects Editor |
| Juan Peralta | Sound Re-Recording Mixer |
| Michael Semanick | Sound Re-Recording Mixer |
| Ben Gibbs | Visual Effects Supervisor |
| Marc Kolbe | Visual Effects Supervisor |
| Matt Copping | Dolly Grip |
| Toby Copping | Key Grip |
| Sky Davies | Second Assistant Camera |
| David Elmes | First Assistant "A" Camera |
| Mark Goellnicht | "A" Camera Operator |
| Warren Grieef | Key Grip |
| Simon Harding | Camera Operator |
| Ben King | Additional Still Photographer |
| Stephen MacDougall | Second Assistant Camera |
| Joseph Messier | Dolly Grip |
| Cameron Morley | Second Assistant Camera |
| Darin Necessary | First Assistant Camera |
| Matt Nettheim | Still Photographer |
| Gino Nix | Key Grip |
| Luke Nixon | First Assistant Camera |
| Shawn Records | Additional Still Photographer |
| Hector Rodriguez | First Assistant Camera |
| Jeremy Rouse | Second Assistant Camera |
| Ricky Schamburg | First Assistant Camera |
| Gary Scott | First Assistant Camera |
| Brad Shield | Second Unit Director of Photography |
| Michael Vivian | Key Grip |
| Peter White | First Assistant Camera |
| Thomas Patrick Smith | First Assistant Director |
| Deborah Antoniou | Second Assistant Director |
| Miranda Colman | Third Assistant Director |
| John Mahaffie | Second Unit Director |
| Eddie Thorne | Second Second Assistant Director |
| Joshua Watkins | Third Assistant Director |
| John Martin | First Assistant Director |
| Justine Arteta | Casting |
| Kim Davis-Wagner | Casting |
| Adam Johansen | Special Effects Makeup Artist |
| Kylie O'Toole | Hairstylist |
| Kylie O'Toole | Makeup Artist |
| Zeljka Stanin | Hairstylist |
| Zeljka Stanin | Makeup Artist |
| Chiara Tripodi | Hair Supervisor |
| Chiara Tripodi | Makeup Supervisor |
| Catherine Bishop | Unit Production Manager |
| Andy Pappas | Unit Manager |
| Steven Soderbergh | Thanks |
| Michelle Williams | Thanks |
| Sam Spiegel | Thanks |
| Edward Saxon | Thanks |
| David O. Russell | Thanks |
| Brad Pitt | Thanks |
| Sean Penn | Thanks |
| Tom Noonan | Thanks |
| Mike Mills | Thanks |
| Bennett Miller | Thanks |
| Tory Metzger | Thanks |
| Andy Jenkins | Thanks |
| Nicole Holofcener | Thanks |
| David Fincher | Thanks |
| Benicio del Toro | Thanks |
| Chris Cunningham | Thanks |
| Ceán Chaffin | Thanks |
| Lance Bangs | Thanks |
| Megan Baltimore | Thanks |
| Miguel Arteta | Thanks |
| Troy Robinson | Stunts |
| Darrin Prescott | Stunt Coordinator |
