 | Dave Foley als Flik (voice) |
 | Kevin Spacey als Hopper (voice) |
 | Julia Louis-Dreyfus als Atta (voice) |
 | Hayden Panettiere als Dot (voice) |
 | Phyllis Diller als Queen (voice) |
 | Richard Kind als Molt (voice) |
 | David Hyde Pierce als Slim (voice) |
 | Joe Ranft als Heimlich (voice) |
 | Denis Leary als Francis (voice) |
 | Jonathan Harris als Manny (voice) |
 | Madeline Kahn als Gypsy Moth (voice) |
 | Bonnie Hunt als Rosie (voice) |
 | Michael McShane als Tuck / Roll (voice) |
 | John Ratzenberger als P.T. Flea (voice) |
 | Brad Garrett als Dim (voice) |
 | Roddy McDowall als Mr. Soil (voice) |
 | Edie McClurg als Dr. Flora (voice) |
 | Alex Rocco als Thorny (voice) |
 | David Ossman als Cornelius (voice) |
 | Carlos Alazraqui als Loco (voice) |
 | Jack Angel als Thud (voice) |
 | Bob Bergen als Aphie / Male Ants (voice) |
 | Kimberly J. Brown als (voice) |
 | Rodger Bumpass als Harry Mosquito (voice) |
 | Anthony Burch als Ant Boys (voice) |
 | Jennifer Darling als Female Ants (voice) |
| Rachel Davey als Grasshoppers (voice) |
 | Debi Derryberry als Baby Maggots (voice) |
 | Paul Eiding als Male Ants (voice) |
 | Jessica Evans als Female Ants (voice) |
 | Bill Farmer als Male Ants (voice) |
| Sam Gifaldi als Ants (voice) |
 | Brad Hall als Grasshopper (voice) |
 | Jess Harnell als Bus Bettle (voice) |
| Brenden Hickey als Ants (voice) |
| Kate Charlotte Hodges als Female Ants (voice) |
| Denise Johnson als Bug (voice) |
 | David L. Lander als Thumper (voice) |
 | John Lasseter als Bug Zapper Bug #1 (voice) |
 | Sherry Lynn als Female Ants (voice) |
 | Mickie McGowan als Cockroach Waitress (voice) |
 | Courtland Mead als Fly (voice) |
 | Christina Milian als Female Ants (voice) |
 | Kelsey Mulrooney als Female Ants (voice) |
| Ryan O'Donohue als Grub (voice) |
 | Jeff Pidgeon als Grasshopper (voice) |
 | Phil Proctor als Slick (voice) |
 | Jan Rabson als Axel (voice) |
 | Jordan Ranft als Ant Boys (voice) |
| Brian M. Rosen als Fly Brothers (voice) |
| Rebecca Schneider als Female Ants (voice) |
 | Francesca Marie Smith als Female Ants (voice) |
 | Andrew Stanton als Bug Zapper Bug #2 (voice) |
 | Hannah Swanson als Female Ants (voice) |
 | Russi Taylor als Female Ants (voice) |
 | Travis Tedford als Ant Kids (voice) |
 | Ashley Tisdale als Lead Blueberry Scout (voice) |
 | Lee Unkrich als Ant #1 (voice) |
 | Jordan Warkol als Ant #2 (voice) |
| Pat Fry als Grasshoppers (uncredited) |
 | Kath Soucie als Ants (uncredited) |
| Andrew Stanton | Screenplay |
| Andrew Stanton | Story |
| Andrew Stanton | Co-Director |
| Lee Unkrich | Editor |
| John Lasseter | Director |
| John Lasseter | Story |
| David Ian Salter | Second Film Editor |
| Gary Rydstrom | Sound Designer |
| Gary Rydstrom | Sound Re-Recording Mixer |
| Don Davis | Orchestrator |
| Pat Jackson | Sound Effects Editor |
| Darla K. Anderson | Producer |
| Kori Rae | Animation Manager |
| Randy Newman | Original Music Composer |
| Bob Pauley | Art Direction |
| Bob Pauley | Character Designer |
| Tia W. Kratter | Art Direction |
| Glenn McQueen | Supervising Animator |
| Rich Quade | Supervising Animator |
| Jean-Claude Kalache | Lighting Technician |
| Eben Ostby | Supervising Technical Director |
| Sophie Vincelette | Lead Set Dresser |
| Katherine Sarafian | Art Department Manager |
| Katherine Sarafian | Thanks |
| Ruth Lambert | Casting |
| Mary Hidalgo | Casting |
| Samuel Lord Black | Software Engineer |
| Joe Ranft | Story |
| Jonas Rivera | Art Department Coordinator |
| Jonas Rivera | Thanks |
| Bryn Imagire | CG Painter |
| Glenn Kim | CG Painter |
| Yvonne Herbst | CG Painter |
| Jerome Ranft | Sculptor |
| Norm DeCarlo | Sculptor |
| Peter DeSève | Visual Development |
| Andrea Warren | Art Department Assistant |
| Billy Merritt | Animation |
| Bret 'Brook' Parker | Fix Animator |
| Bret 'Brook' Parker | Animation Fix Coordinator |
| David Eisenmann | Set Dresser |
| Sarah Jo Helton | Schedule Coordinator |
| Doug Sweetland | Animation |
| Scott Clark | Animation |
| Andrew Gordon | Animation |
| Shawn Krause | Animation |
| Jeff Pratt | Animation |
| David DeVan | Animation |
| John Kahrs | Animation |
| Bobby Podesta | Animation |
| Kyle Balda | Animation |
| Michael Berenstein | Animation |
| Brett Coderre | Animation |
| Karen Kiser | Animation |
| Daniel Mason | Animation |
| David Tart | Animation |
| Alan Sperling | Animation |
| J. Warren Trezevant | Animation |
| Hoon H. Kim | Production Intern |
| Eliot Smyrl | Shading |
| Brian Green | Lighting Technician |
| Brian Green | Shading |
| Mark Adams | Modeling |
| James Bancroft | Modeling |
| Jason Bickerstaff | Lighting Technician |
| Andrew Schmidt | Animation |
| Andrew Schmidt | Modeling |
| Kim White | Lighting Technician |
| Sue Maatouk-Kalache | Thanks |
| Daniel McCoy | Shading |
| Daniel McCoy | Software Engineer |
| Ben Jordan | Shading |
| David Batte | Shading |
| Janet Lucroy | Lighting Technician |
| Joyce Powell | Lighting Technician |
| Lauren Alpert | Lighting Technician |
| Brad Andalman | Lighting Technician |
| Brad Andalman | Software Engineer |
| Bena Currin | Lighting Technician |
| Bena Currin | Software Engineer |
| Thomas Hahn | Software Engineer |
| Ronen Barzel | Software Engineer |
| Louis Rivera | Camera Supervisor |
| Drew Rogge | Software Engineer |
| Don Conway | Camera Technician |
| David DiFrancesco | Photoscience Manager |
| Erik Forman | Systems Administrators & Support |
| Doc Kane | ADR & Dubbing |
| Michael Silvers | ADR Editor |
| Shannon Mills | Sound Design Assistant |
| Dennie Thorpe | Foley |
| Jana Vance | Foley |
| Robert Taylor | Thanks |
| Tim Holland | Supervising Sound Editor |
| Sharon Calahan | Director of Photography |
| William Cone | Production Design |
| Ira Hearshen | Orchestrator |
| Don McEnery | Screenplay |
| Bob Shaw | Screenplay |
| Kevin Reher | Producer |
| William Joyce | Visual Development |
| Fred Warter | Visual Development |
| Lindsey Collins | Lighting Manager |
| John K. Carr | Temp Sound Editor |
| Mickie McGowan | ADR Voice Casting |
| Tony Sereno | Sound Mix Technician |
| Gary Rizzo | Sound Mix Technician |
| Karen Prell | Animation |
| Reid Gershbein | Lighting Technician |
| Reid Gershbein | Software Engineer |
| Chris Perry | Lighting Technician |
| Dylan Brown | Animation |
| Anthony Scott | Animation |
| Mark Oftedal | Animation |
| Chris Montan | Executive Music Producer |
| Bruce White | Musician |
| Mark A. Walsh | Animation |
| Meredith Layne | Casting Assistant |
| David Slusser | Temp Music Editor |
| Michael Parks | Animation |
| Armen Ksajikian | Musician |
| Timothy Hittle | Animation |
| Stephen King | Lighting Technician |
| Brian McNulty | Post Production Supervisor |
| Mark Thomas Henne | Software Engineer |
| Kristina Perez | Systems Administrators & Support |
| Marian Wilde | Foley Editor |
| Steve Johnson | Visual Development |
| Steve Johnson | Software Engineer |
| Gary Summers | Sound Re-Recording Mixer |
| Dale E. Grahn | Color Timer |
| Adrian Ochoa | Thanks |
| Sonoko Konishi | Lighting Technician |
| Justin Oliphant | Production Intern |
| Rick Maki | Visual Development |
| Jean Gillmore | Visual Development |
| M.T. Silvia | Systems Administrators & Support |
| Bruce Zick | Visual Development |
| Susan Bradley | Title Designer |
| Bruce Perens | Software Engineer |
| Steve Segal | Animation |
| Lori L. Eschler | Supervising Music Editor |
| Kitt Hirasaki | Software Engineer |
| Mary Helen Leasman | Foley Editor |
| James W. Williams | Software Engineer |
| John Hee Soo Lee | Systems Administrators & Support |
| James Burgess | Camera Department Manager |
| David Lomax | Modeling |
| Jonathan Sacks | Orchestrator |
| Patsy Bouge | Post Production Consulting |
| Mark Berrow | Musician |
| Tom Boyd | Musician |
| Mary Beth Smith | Negative Cutter |
| James Thatcher | Musician |
| Jeff Wan | Camera Technician |
| William Reeves | Supervising Technical Director |
| Les Major | Animation |
| Doug Sheppeck | Animation |
| Mitch Prater | Shading |
| Brian M. Rosen | Shading |
| Brian M. Rosen | Software Engineer |
| Kelly O'Connell | Lighting Technician |
| Tom Freeman | First Assistant Editor |
| Craig McGillivray | Lighting Technician |
| Peter Davies | Musician |
| Charles Paley | Music Editor |
| Danielle Feinberg | Lighting Technician |
| Miguel Ángel Poveda | Post Production Supervisor |
| John B. Anderson | Shading |
| B.Z. Petroff | Script Supervisor |
| Ian Evans | Thanks |
| Rachel Bolt | Musician |
| Dale Ruffolo | Lighting Technician |
| Hana Yoon | Editorial Coordinator |
| Andrew Page | Music Supervisor |
| Kurt Fleischer | Software Engineer |
| Michael Kass | Software Engineer |
| Tony DeRose | Software Engineer |
| Michael B. Johnson | Software Engineer |
| Arun Rao | Software Engineer |
| Dirk Van Gelder | Software Engineer |
| Patrick Wilson | Lighting Technician |
| Lars R. Damerow | Systems Administrators & Support |
| Cynthia Dueltgen | Lighting Technician |
| Patrick Guenette | Systems Administrators & Support |
| Thomas Jordan | Production Intern |
| Ana Lacaze | Lighting Technician |
| Ken Lao | Lighting Technician |
| Ken Lao | Shading |
| Eileen O'Neill | Lighting Technician |
| Keith Olenick | Shading |
| John Singh Pottebaum | Lighting Technician |
| John Singh Pottebaum | Software Engineer |
| John Warren | Lighting Technician |
| Bill Wise | Lighting Technician |
| Bill Wise | Shading |
| Timothy Sorensen | Post Production Assistant |
| Don Williams | Musician |
| Lisa Forssell | Lighting Technician |
| Lisa Forssell | Shading |
| Lisa Forssell | Software Engineer |
| Ling Hsu | Systems Administrators & Support |
| Jason 'Jayfish' Hull | Systems Administrators & Support |
| Tom Kim | Lighting Coordinator |
| Chris King | Software Engineer |
| Peter Nye | Software Engineer |
| Sudeep Rangaswamy | Lighting Technician |
| Sudeep Rangaswamy | Software Engineer |
| Don Schreiter | Lighting Technician |
| Michael Shantzis | Software Engineer |
| Nelson Siu | Systems Administrators & Support |
| Heidi Stettner | Software Engineer |
| Andy Thomas | Systems Administrators & Support |
| Tien Truong | Shading |
| Mark T. VandeWettering | Software Engineer |
| Christopher C. Walker | Systems Administrators & Support |
| Wayne Wooten | Lighting Technician |
| Wayne Wooten | Software Engineer |
| Andrew Findon | Musician |
| Paul Clarvis | Musician |
| Lisa Ellis | Thanks |
| Deborah R. Fowler | Lighting Technician |
| Damir Frkovic | Modeling |
| David R. Haumann | Thanks |
| Keith B.C. Gordon | Lighting Technician |
| Ken Huey | Systems Administrators & Support |
| Alisa Gilden | Systems Administrators & Support |
| May Pon | Systems Administrators & Support |
| Edgar Quinones | Systems Administrators & Support |
| Bryan Bird | Systems Administrators & Support |
| Peter Kaldis | Systems Administrators & Support |
| Michael O'Brien | Information Systems Manager |
| Auburn C. 'Aubie' Schmidt | Systems Administrators & Support |
| Jonathan Williams | Musician |
| Debbie L. O'Keeffe | Thanks |
| Paul Kegg | Musician |
| Skaila Kanga | Musician |
| Dennis 'D.J.' Jennings | Thanks |
| Bill Polson | Lighting Technician |
| Phil Beffrey | Software Engineer |
| Loren Carpenter | Modeling |
| Dan Lyke | Software Engineer |
| Shaun Oborn | Software Engineer |
| Matt Pharr | Software Engineer |
| Ruieta DaSilva | Lighting Technician |
| Jun Han Cho | Lighting Technician |
| Jason B. Hendrix | Systems Administrators & Support |
| Nathan Ardaiz | Systems Administrators & Support |
| George Bagtas | Systems Administrators & Support |
| Adam Beeman | Systems Administrators & Support |
| Gregory Yong Paik | Systems Administrators & Support |
| Edilberto A. Soriano Jr. | Systems Administrators & Support |
| Alex Stahl | Systems Administrators & Support |
| Dallas Wisehaupt | Systems Administrators & Support |
| David Gordon | Visual Development |
| Lance Martin | Animation Production Assistant |
| Eric Lebel | Software Engineer |
| Rona Michele | Temp Sound Editor |
| Anne Pia | Systems Administrators & Support |
| Kirk Bowers | Lighting Technician |
| David Valdez | Shading |
| Warren Hays | Systems Administrators & Support |
| Duncan Keefe | Information Systems Manager |
| Tom Carlisle | Thanks |
| Kenny Condit | Thanks |
| Amy Ellenwood | Thanks |
| Ellen Fair | Thanks |
| Lianna Kelley | Thanks |
| John Lansberry | Thanks |
| Milan Parikh | Thanks |
| Craig Payne | Thanks |
| Clay Welch | Thanks |
| Eric A. Wood | Thanks |
| Lee Ozer | Software Engineer |
| Michael Griffin Kelly | Art Department Assistant |
| Maneesh Agrawala | Software Engineer |
| Dana Batali | Software Engineer |
| David M. Laur | Software Engineer |
| rendering software engineer | Software Engineer |
| Sandra Christiansen | Animation |
| James Walker | Musician |
| Tommy Johnson | Musician |
| Dale McBeath | Supervising Animator |
| Jeff 'Heffe' Millhollen | Systems Administrators & Support |
| Adam Bronstein | Production Intern |
| Crystal Jones | Production Intern |
| Maneli Keshavarzi | Production Intern |
| Josh Morsell | Production Intern |
| Stephanie Andrews | Lighting Technician |
| Donna Cipriani | Production Accountant |
| Susan Tatsuno Hamana | Production Manager |
| Bankole Lasekan | Animation |
| Roger Rose | Animation |
| Tomoko Harada Ferguson | Animation Production Assistant |
| Wei-Chung Chang | Modeling |
| Lou Fancher | Visual Development |
| Paul Kratter | Visual Development |
| Bob Baron | Additional Sound Re-Recordist |
