 | Billy Crystal als Mike Wazowski (voice) |
 | John Goodman als James 'Sulley' Sullivan (voice) |
 | Steve Buscemi als Randall Boggs (voice) |
 | Helen Mirren als Dean Hardscrabble (voice) |
 | Peter Sohn als Scott 'Squishy' Squibbles (voice) |
 | Joel Murray als Don Carlton (voice) |
 | Sean Hayes als Terri Perry (voice) |
 | Dave Foley als Terry Perry (voice) |
 | Charlie Day als Art (voice) |
 | Alfred Molina als Professor Knight (voice) |
 | Tyler Labine als Brock Pearson (voice) |
 | Nathan Fillion als Johnny Worthington (voice) |
 | Aubrey Plaza als Claire Wheeler (voice) |
 | Bobby Moynihan als Chet Alexander (voice) |
 | Noah Johnston als Young Mike (voice) |
 | Julia Sweeney als Ms. Squibbles (voice) |
 | Bonnie Hunt als Karen Graves (voice) |
 | John Krasinski als Frank McCay (voice) |
 | Bill Hader als Referee / Slug (voice) |
 | Beth Behrs als Carrie Williams (voice) |
 | Bob Peterson als Roz (voice) |
 | John Ratzenberger als Yeti (voice) |
 | Lori Alan als Additional Voices (voice) |
 | Carlos Alazraqui als Additional Voices (voice) |
 | Jack Angel als Additional Voices (voice) |
 | Bob Bergen als Additional Voices (voice) |
 | Gregg Berger als Additional Voices (voice) |
 | Rodger Bumpass als Additional Voices (voice) |
 | Neil Campbell als Additional Voices (voice) |
 | Ava Acres als Additional Children's Voices (voice) |
 | Sherry Lynn als Additional Voices (voice) |
 | Paul Lazenby als Monster (voice, uncredited) |
 | Aramé Scott als Additional Children's Voices (voice) |
 | Joseph John Schirle als Additional Children's Voices (voice) |
 | Kristen Li als Additional Children's Voices (voice) |
 | Davin Ransom als Additional Children's Voices (voice) |
 | Raymond Ochoa als Additional Children's Voices (voice) |
 | Calum John als Additional Children's Voices (voice) |
 | Montse Hernandez als Additional Children's Voices (voice) |
 | Mason Cook als Additional Children's Voices (voice) |
| Makenna Cowgill als Additional Children's Voices (voice) |
 | Tyree Brown als Additional Children's Voices (voice) |
| Jack Bright als Additional Children's Voices (voice) |
 | Isabella Acres als Additional Children's Voices (voice) |
 | April Winchell als Additional Voices (voice) |
 | Colette Whitaker als Additional Voices (voice) |
 | Jim Ward als Additional Voices (voice) |
 | Marcia Wallace als Additional Voices (voice) |
 | David Theune als Additional Voices (voice) |
 | Tara Strong als Additional Voices (voice) |
 | Mindy Sterling als Additional Voices (voice) |
 | Joel Spence als Additional Voices (voice) |
 | Betsy Sodaro als Additional Voices (voice) |
 | Patrick Seitz als Additional Voices (voice) |
 | Dan Scanlon als Additional Voices (voice) |
 | Jan Rabson als Additional Voices (voice) |
 | Cristina Pucelli als Additional Voices (voice) |
 | Jeff Pidgeon als Additional Voices (voice) |
 | Dannah Feinglass Phirman als Additional Voices (voice) |
 | Donovan Patton als Additional Voices (voice) |
 | Bret Parker als Additional Voices (voice) |
 | Colleen O'Shaughnessey als Additional Voices (voice) |
 | Laraine Newman als Additional Voices (voice) |
 | David Neher als Additional Voices (voice) |
 | Pam Murphy als Additional Voices (voice) |
 | Matthew Mercer als Additional Voices (voice) |
 | Alec Medlock als Additional Voices (voice) |
 | Allan McLeod als Additional Voices (voice) |
 | Mickie McGowan als Additional Voices (voice) |
 | Tricia McAlpin als Additional Voices (voice) |
 | Mona Marshall als Emmet (voice) |
 | Jason Marsden als Additional Voices (voice) |
 | Danny Mann als Additional Voices (voice) |
 | Dawnn Lewis als Additional Voices (voice) |
 | Elissa Knight als Additional Voices (voice) |
 | John Kassir als Additional Voices (voice) |
 | Brandon Johnson als Additional Voices (voice) |
 | Jess Harnell als Additional Voices (voice) |
| Mike Hanford als Additional Voices (voice) |
 | Daniel Gerson als Additional Voices (voice) |
 | Teresa Ganzel als Additional Voices (voice) |
 | Donald Fullilove als Additional Voices (voice) |
 | Andy Fischer-Price als Additional Voices (voice) |
 | Keith Ferguson als Additional Voices (voice) |
 | Bill Farmer als Additional Voices (voice) |
 | Paul Eiding als Additional Voices (voice) |
 | Greg Dykstra als Additional Voices (voice) |
 | John Cygan als Additional Voices(voice) |
 | Sean Conroy als Additional Voices (voice) |
 | Patrick Carlyle als Additional Voices (voice) |
| Natalie Jane Dang als Additional Children's Voices (voice) |
| Gage Davenport als Additional Children's Voices (voice) |
| Ethan Louis Samuels DiSalvio als Additional Children's Voices (voice) |
| Faith Goblirsch als Additional Children's Voices (voice) |
| Brooke Klinger als Additional Children's Voices (voice) |
| Nikolas Michailidis als Additional Children's Voices (voice) |
| Marley Pearson als Additional Children's Voices (voice) |
| Lindsay Lefler als Additional Voices (voice) |
| John Lasseter | Executive Producer |
| Lee Unkrich | Executive Producer |
| Kori Rae | Producer |
| Ricky Nierva | Production Design |
| Kevin Reher | Casting |
| Natalie Lyon | Casting |
| Andrew Stanton | Executive Producer |
| Dan Scanlon | Director |
| Robert L. Baird | Screenplay |
| Dan Scanlon | Screenplay |
| Randy Newman | Original Music Composer |
| Daniel Gerson | Screenplay |
| Tom Myers | Supervising Sound Editor |
| Paul Aichele | Modeling |
| Randy Berrett | Painter |
| E.J. Holowicki | Sound Effects Editor |
| Josh Anon | Layout |
| Jason Deamer | Co-Art Director |
| Claire Faggioli | Animation Fix Coordinator |
| Nicole Paradis Grindle | Associate Producer |
| Jana Vance | Foley |
| Nick Lucas | Simulation & Effects Artist |
| Don Crum | Animation |
| Arik Ehle | Animation |
| Teresa Eckton | Sound Effects Editor |
| Jason Bickerstaff | Sculptor |
| Everett Downing Jr. | Animation |
| Dustin Cawood | Sound Effects Editor |
| Mark Adams | Sets & Props Artist |
| Laura Beth Albright | CG Painter |
| Scott Clark | Supervising Animator |
| Luke Dunn Gielmuda | Foley Editor |
| Pascal Garneau | Foley Editor |
| Matt Aspbury | Director of Photography |
| Brian Chumney | Dialogue Editor |
| Michael Semanick | Sound Re-Recording Mixer |
| Andrew Cadelago | Layout |
| Kevin Chesnos | Animation |
| David Eisenmann | Set Dressing Supervisor |
| Tony Sereno | Sound Re-Recording Mixer |
| Dennie Thorpe | Foley |
| Scott Clifford | Master Lighting Artist |
| Greg Dykstra | Sculptor |
| Jason Bickerstaff | Modeling |
| Shaun Chacko | Animation |
| Mach Tony Kobayashi | Simulation & Effects Artist |
| Paul Abadilla | Set Dressing Artist |
| Simon Christen | Animation |
| Greg Snyder | Editor |
| Paul Cichocki | Post Production Supervisor |
| Alan Barillaro | Animation |
| Brett Coderre | Animation |
| Robb Denovan | Animation |
| Justin Pearson | Sound Effects Editor |
| Sonoko Konishi | Simulation & Effects Artist |
| Tom Myers | Sound Designer |
| James Spencer | Sound Re-Recording Mixer |
| Robert Anderson | Layout |
| Pete Docter | Executive Producer |
| Paul Abadilla | Set Designer |
| Ronald G. Roumas | Sound Recordist |
| Michael Silvers | Supervising Sound Editor |
| Gary Summers | Sound Re-Recording Mixer |
| Jean-Claude Kalache | Director of Photography |
| Tim Best | Master Lighting Artist |
| Nelson 'Rey' Bohol | Set Dressing Artist |
| Michael Capbarat | Animation Department Coordinator |
| Bernhard Haux | Character Designer |
| Nancy Kato | Animation |
| Dani Belko | Production Intern |
| Jiayi Chong | Simulation & Effects Artist |
| Brian London | Visual Effects Coordinator |
| Matthew Kiyoshi Wong | Visual Effects Designer |
| Frank Aalbers | Sets & Props Artist |
| Rodney A. Brillante | Animation Department Coordinator |
| Rodney A. Brillante | Art Department Coordinator |
| Jacob Brooks | CGI Director |
| Eric S. Degner | Animation |
| Joey Gilbreath | Fix Animator |
| Andrew Gordon | Animation Director |
| Jason Katz | Script Supervisor |
| Austin Madison | Animation |
| Andrew Pienaar | Master Lighting Artist |
| Mark Sanford | Layout |
| Stefan Schumacher | Animation |
| Elizabeth Thiers | Art Department Assistant |
| Ron Zorman | Animation |
| Laurie Kim | Simulation & Effects Artist |
| Max Bickley | Master Lighting Artist |
| Mathieu Cassagne | Lighting Artist |
| Graham Finley | Animation |
| John Chun Chiu Lee | Animation |
| Ian Krebs-Smith | Simulation & Effects Artist |
| Samantha Raja | Simulation & Effects Artist |
| Tim Speltz | Visual Effects Designer |
| Airton Dittz Jr. | Master Lighting Artist |
| Nathan Fariss | Lead Set Dresser |
| Adam Habib | Layout |
| Alex Harvill | Lead Painter |
| Aron Hatfield | Animation |
| Joshua Hollander | Lighting Manager |
| Jonas Jarvers | Character Designer |
| Patty Kihm Stevenson | Animation |
| Albert Lozano | Character Designer |
| Corey Tyler | Foley Editor |
| Eric Andraos | Shading |
| Mimia Arbelaez | Master Lighting Artist |
| Evan Bonifacio | Animation |
| Cathleen Carmean | Animation Manager |
| Jennifer Chang | Color Designer |
| Richard Gunzer | Fix Animator |
| Thomas Moser | Lighting Director |
| Rob Jensen | Animation |
| Robert Kinkead | Layout |
| Aaron Koressel | Animation |
| Ivo Kos | Modeling |
| Shauna Lacoste | Production Intern |
| Erick Oh | Animation |
| Eric Pearson | Post-Production Manager |
| Amit Baadkar | Visual Effects Designer |
| Tiffany Erickson Klohn | Simulation & Effects Artist |
| Jack Chang | Character Designer |
| Belen Gil-Palacios | Fix Animator |
| Tsung-Yin Hsieh | Animation |
| Colin Levy | Layout |
| Paul Mendoza | Animation |
| Yibing Jiang | CG Painter |
| David Baraff | Simulation & Effects Artist |
| Jon Reisch | Visual Effects Supervisor |
| Travis Hathaway | Animation |
| Jonathan Hoffman | Character Designer |
| Patrick Lin | Layout |
| Steve Mason | Animation |
| David Park | Production Manager |
| Joshua Jenny | Visual Development |
| Kirsten Peterson Marshall | Simulation & Effects Production Assistant |
| Lloyd Bernberg | Master Lighting Artist |
| Randy Berrett | Shading |
| Christina Garcia Weiland | Set Dressing Artist |
| Timothy Hittle | Animation |
| Daniel Chang | Simulation & Effects Artist |
| Michael Chia-Wei Chen | Animation |
| Jaehun Chung | CG Painter |
| Kathleen Cosby | Lighting Artist |
| Luke Martorelli | Master Lighting Artist |
| Bret Parker | Animation |
| Alex Hessler | CG Painter |
| Jim Cody Harrington | Visual Effects Designer |
| Dale Ruffolo | Modeling |
| Paul Abadilla | Sets & Props Artist |
| Amy L. Allen | Set Dressing Artist |
| Pamela J. Choy | Sets & Props Artist |
| Chris Chua | Animation |
| Trent Crow | CG Painter |
| Mitch Kopelman | Master Lighting Artist |
| Brett Pulliam | Animation |
| Matthew Strangio | Animation |
| Stephen Marshall | Visual Effects Designer |
| Edgar Rodriguez | Simulation & Effects Artist |
| Ramon Cardona | Animation Production Assistant |
| Guillaume Chartier | Fix Animator |
| Alice Clendenen | Lighting Manager |
| Christian Hoffman | Character Modelling Supervisor |
| Michael Honsel | Character Designer |
| Matt Majers | Animation |
| Juan Carlos Navarro Carrión | Animation |
| Eric Froemling | Visual Development |
| Carlos Baena | Character Designer |
| Sanjay Bakshi | Supervising Technical Director |
| Jeremy Birn | Lighting Artist |
| Jude Brownbill | Animation |
| Justin Farris | Fix Animator |
| Matthew Garcia-Dunn | Set Production Intern |
| Stefan Gronsky | Lighting Artist |
| Doc Kane | Dialogue |
| Sanjay Bakshi | Character Technical Supervisor |
| Nick Bartone | Lighting Director |
| Byron Bashforth | Shading |
| Justine Codron | Master Lighting Artist |
| Judy Yu-Inn Jou | Art Department Coordinator |
| Alison Leaf | Set Dressing Artist |
| Javier Moya Alonso | Animation |
| Guido Quaroni | Supervising Technical Director |
| Jan Pfenninger | Layout |
| Robert Kondo | Co-Art Director |
| Jordan Rempel | Master Lighting Artist |
| Chris Sasaki | Character Designer |
| Julien Schreyer | Lighting Artist |
| Philip Shoebottom | Lighting Artist |
| Russell J. Stough | Layout |
| Gregg Olsson | Layout |
| Terry Song | Animation |
| Megan Stifter | Shading |
| Brian Tindall | CG Painter |
| Chuck Waite | CG Animator |
| Jack Hattori | CG Painter |
| Brett Schulz | Animation |
| David Shavers | Master Lighting Artist |
| Michael Stocker | Animation Director |
| Jeremie Talbot | Character Designer |
| Elizabeth Thiers | Animation Production Assistant |
| Jessica Torres | Animation |
| Wendell Lee | Animation |
| Holger Leihe | Animation |
| Emmanuel Maniez | Lighting Artist |
| Kiki Mei Kee Poh | CG Painter |
| Jayson Price | Animation |
| Leo Santos | Layout |
| Michael Sauls | Fix Animator |
| Ross Stevenson | Animation |
| Duncan Ramsay | Art Department Coordinator |
| K. C. Roeyer | Animation |
| Shelly Wan | Color Designer |
| Josée Lajoie | Master Lighting Artist |
| Mark Piretti | Character Designer |
| Nickolas Rosario | Animation |
| Robert H. Russ | Animation Director |
| Daniela Strijleva | Character Designer |
| Angelique Reisch | Lighting Artist |
| Joshua Seaver | CG Painter |
| Charlie Ramos | Layout |
| David Sokolosky | Animation Department Coordinator |
| Carlo Vogele | Animation |
| Tom Zach | Animation |
| Laura Phillips | CG Painter |
| Amber Rudolph | Animation |
| Doug Sheppeck | Animation |
| Joseph Suen | Modeling |
| Peter Sumanaseni | Lighting Manager |
| Edward Robbins | Character Designer |
| Mark Shirra | Layout |
| Shalin Shodhan | CG Painter |
| Brian Tindall | Character Designer |
| Ricky Wight | Fix Animator |
| Anthony Ho Wong | Animation |
| Raymond Wong | Modeling |
| Cynthia Lusk | Production Manager |
| Konstantin Promokhov | Visual Effects Designer |
| David Batte | Shading |
| Nick Berry | Art Department Manager |
| Jessica Harvill | Lighting Director |
| Sungyeon Joh | Lighting Artist |
| Robert Kondo | Shading |
| Bruce Kuei | Animation |
| Burt Peng | Lighting Artist |
| Thidaratana Annee Jonjai | CG Painter |
| Andrew Schmidt | Sculptor |
| Daisuke Tsutsumi | Art Direction |
| Dave Hale | Visual Effects Designer |
| Lindsay Andrus | Animation |
| Chris Bernardi | Shading |
| Johnson Cheng | Lighting Production Assistant |
| Ye Won Cho | Lighting Artist |
| Jason Davies | Character Designer |
| Russell J. Stough | Production Manager |
| Chris Barron | First Assistant Sound Editor |
| Christine Waggoner | Simulation & Effects Production Assistant |
| Megan Bartel | Lighting Coordinator |
| Christian Haniszewski | Character Designer |
| Katherine Ipjian | CG Painter |
| Sarah Fowler Deluna | CG Painter |
| Neil Helm | Animation |
| Michael Krummhoefener | Modeling |
| Ramiro Lopez Dau | Animation |
| Tim Milliron | Character Designer |
| Allison Rutland | Animation |
| Matthew Silas | Layout |
| Richard Snyder | Sets & Props Artist |
| Michael Sparber | Lighting Supervisor |
| Jane Snow Stewart | Fix Animator |
| Raphael Suter | Animation |
| Royce Wesley | Animation |
| Alon Winterstein | Fix Animator |
| Guilherme Sauerbronn Jacinto | Animation |
| Erin Magill | Set Decorating Coordinator |
| Kelsey Mann | Script Supervisor |
| Cameron Miyasaki | Animation |
| Sanjay Patel | Character Designer |
| Andreas Procopiou | Animation |
| Adam Rodriguez | Fix Animator |
| Eric Rosales | Set Decorating Coordinator |
| Vandana Reddy Sahrawat | Lighting Artist |
| Maria Yershova | Master Lighting Artist |
| Allysa Amundson | Administration |
| Douglas Waters | Software Team Lead |
| Tom Gately | Opening/Ending Animation |
| Michael Stewart Johnson | Systems Administrators & Support |
| Jonathan Sacks | Orchestrator |
| Tara Hernandez | Software Team Lead |
| Jack Paulus | Software Team Lead |
| Sue Maatouk-Kalache | Information Systems Manager |
| Ottavia Storer | Information Systems Manager |
| Tyler Fazakerley | Systems Administrators & Support |
| Robert Hamrick | Systems Administrators & Support |
| Benjamin Rillie | Systems Administrators & Support |
| Wendy Dale Tanzillo | Administration |
| Gregory Amundson | Second Film Editor |
| Ricky Der | Systems Administrators & Support |
| Kurt Fleischer | Software Engineer |
| Jean-Daniel Nahmias | Software Engineer |
| Rachel Ergas | Finance |
| Cory Knox | Systems Administrators & Support |
| Jessica Wan | Systems Administrators & Support |
| Anthony Kemp | Lighting Coordinator |
| C.J. Hsu | First Assistant Editor |
| Christopher Zuber | Editorial Staff |
| Meghan Benafield | Administration |
| Beatrice De Luca | Finance |
| Sarah Shen | Software Team Lead |
| Tamsen Mitchell | Information Systems Manager |
| Chris Lasell | Systems Administrators & Support |
| Shari Villarde | Finance |
| Bruno Coon | Music Editor |
| Tom MacDougall | Music Supervisor |
| J. Darion Cuevas | Systems Administrators & Support |
| Susan Eggett | Production Office Assistant |
| George Elkoura | Software Team Lead |
| Jamie Hecker | Software Team Lead |
| Kacy Naylor | Finance |
| Chris Wiggum | Publicist |
| Courtney Bergin | Production Office Assistant |
| Robin Chandler | Publicist |
| Naomi Davidson | Finance |
| Tony DeRose | Software Team Lead |
| Eric Gregory | Software Team Lead |
| Erin Tomson | Software Team Lead |
| Sowmya Natarajan | Information Systems Manager |
| Heather D.C. Jackson | Finance |
| Annette Wang | Finance |
| Ron Zorman | Opening/Ending Animation |
| Hana Yoon | Editorial Coordinator |
| Megan Albert | Finance |
| Deborah Coleman | Publicist |
| Danielle Cambridge | Information Systems Manager |
| Benjamin Turman | Information Systems Manager |
| Amanda Deering Jones | Script Supervisor |
| Mark Meyer | Software Engineer |
| Tanya Oskanian | Administration |
| Steven Ricks | Systems Administrators & Support |
| Drew Rogge | Software Engineer |
| Kristina Ruud | Finance |
| Hasia Sroat | Publicist |
| J.A.C. Redford | Orchestrator |
| Luis Alarcon-Cisneros | Craft Service |
| Nancy Garretson Case | Finance |
| Dirk Van Gelder | Software Team Lead |
| David Wehr | Information Systems Manager |
| Erik Forman | Systems Administrators & Support |
| Leslie Law | Systems Administrators & Support |
| Michelle Moretta | Administration |
| Steve Bloom | Second Film Editor |
| Michael A. Bordas | Software Team Lead |
| Ozan Serim | Information Systems Manager |
| Jeanie Gray | Finance |
| Danielle Rae Levin | Administration |
| Shannon Wood | Script Supervisor |
| Adrian Syben | Editorial Production Assistant |
| Steve Schaeffer | Musician |
| Thomas Hahn | Software Team Lead |
| Cory Omand | Software Team Lead |
| Kristi Gamble | Finance |
| Gillian Libbert | Editorial Manager |
| Ryan Burns | Software Team Lead |
| Michael B. Johnson | Software Team Lead |
| Brett Levin | Software Team Lead |
| Heather Feng | Administration |
| Valerie Hathaway | Finance |
| Jonathan Hurwitz | Production Office Assistant |
| Jason Merck | Opening/Ending Animation |
| Deana Walker | Finance |
| Holly Dorff | ADR Voice Casting |
| Andrew Page | Music Director |
| Forrester Cole | Software Engineer |
| Hayley Iben | Software Team Lead |
| Warren Latimer | Systems Administrators & Support |
| Terry Lee Moseley | Systems Administrators & Support |
| Laura Savidge | Software Engineer |
| Michelle Simons | Finance |
| Ian Westcott | Systems Administrators & Support |
| David Condolora | Editorial Staff |
| Tlaloc Alvarez | Systems Administrators & Support |
| Susan Bradley | Title Designer |
| Tom Duff | Software Engineer |
| Ian Buono | Software Team Lead |
| F. Sebastian Grassia | Software Team Lead |
| Arun Rao | Software Team Lead |
| Gregory Finch | Information Systems Manager |
| Timothy Glass | Finance |
| Joanna Laurent | Systems Administrators & Support |
| Matthew Lindahl | Systems Administrators & Support |
| Jeremiah Macias | Systems Administrators & Support |
| Lara Pendleton | Administration |
| Peter Plackowski | Systems Administrators & Support |
| Jason Watkins | Systems Administrators & Support |
| Adam Woodbury | Software Team Lead |
| Emily Engie | Production Accountant |
| Rosana Neciuk | Finance |
| André Pang | Software Engineer |
| Maria Lee | CG Painter |
| Kristen Li | ADR Voice Casting |
| Michael Kass | Software Engineer |
| Briana Gardner | Publicist |
| Kentaro Hinoki | Finance |
| Michelle Liu Chung | Production Accountant |
| Jenni Rowland | Production Office Assistant |
| Adrian Molina | Additional Writing |
| Ken Schretzmann | Additional Editing |
| Stephen Schaffer | Additional Editing |
| Kevin Nolting | Additional Editing |
| Anna Wolitzky | Additional Editing |
| Adrian Molina | Title Designer |
| H. Lee Peterson | Additional Editing |
| Serena Warner | Additional Editing |
| Craig Foster | Art Direction |
| Jason Johnston | VFX Artist |
| Louis Gonzales | Story Artist |
| Kelsey Mann | Story Supervisor |
| Jason Katz | Story Supervisor |
| Rosana Sullivan | Story Artist |
