 | Albert Brooks als Marlin (voice) |
 | Ellen DeGeneres als Dory (voice) |
 | Ed O'Neill als Hank (voice) |
 | Hayden Rolence als Nemo (voice) |
 | Diane Keaton als Jenny (voice) |
 | Eugene Levy als Charlie (voice) |
 | Ty Burrell als Bailey (voice) |
 | Kaitlin Olson als Destiny (voice) |
 | Idris Elba als Fluke (voice) |
 | Dominic West als Rudder (voice) |
 | Kate McKinnon als Wife Fish (voice) |
 | Bill Hader als Husband Fish (Stan) (voice) |
 | Andrew Stanton als Crush (voice) |
 | Torbin Xan Bullock als Gerald (voice) |
| Bennett Dammann als Squirt (voice) |
 | Bob Peterson als Mr. Ray (voice) |
 | Alexander Gould als Passenger Carl (voice) |
 | Katherine Ringgold als Chicken Fish (voice) |
 | John Ratzenberger als Husband Crab (Bill) (voice) |
 | Angus MacLane als Sunfish 'Charlie Back and Forth' (voice) |
 | Willem Dafoe als Gill (voice) |
 | Brad Garrett als Bloat (voice) |
 | Allison Janney als Peach (voice) |
 | Austin Pendleton als Gurgle (voice) |
 | Stephen Root als Bubbles (voice) |
 | Vicki Lewis als Deb (&Flo) (voice) |
 | Jerome Ranft als Jacques (voice) |
| Sloane Murray als Young Dory (voice) |
| Lucia Geddes als Tween Dory (voice) |
 | Gabriel C. Brown als Becky |
 | Sigourney Weaver als Sigourney Weaver (voice) |
 | Riley Lio als Additional Voices (voice) |
| Andrew Stanton | Screenplay |
| Andrew Stanton | Director |
| Andrew Stanton | Story |
| Bob Peterson | Story |
| John Lasseter | Executive Producer |
| Thomas Newman | Original Music Composer |
| Angus MacLane | Co-Director |
| Jeremy Lasky | Director of Photography |
| David DeVan | Animation Supervisor |
| Axel Geddes | Editor |
| Steve Pilcher | Production Design |
| Kevin Reher | Casting |
| Lindsey Collins | Producer |
| Shelley Roden | Foley |
| Natalie Lyon | Casting |
| John Roesch | Foley |
| Sara Maher | Animation Manager |
| Bob Roath | Associate Producer |
| Don Shank | Art Direction |
| Tim Nielsen | Sound Designer |
| Victoria Strouse | Screenplay |
| Victoria Strouse | Story |
| Ken Fischer | Sound Effects Editor |
| Jack Whittaker | Sound Effects Editor |
| Matt Jones | Story Artist |
| James W. Brown | Animation |
| Erick Oh | Animation |
| Bert Berry | Art Direction |
| Jonathan Borland | Sound Effects Editor |
| Steve Slanec | Supervising Sound Editor |
| Michal Makarewicz | Animation Director |
| Ian Megibben | Lighting Camera |
| James Spencer | Dialogue Editor |
| Robb Denovan | Animation Director |
| Claire Faggioli | Animation Manager |
| Michael Stocker | Animation Supervisor |
| Hosuk Chang | Visual Effects |
| David Lipton | Visual Effects |
| Andrew Wheeler | Visual Effects |
| Dana Frankoff | Art Department Coordinator |
| Paul Abadilla | Set Designer |
| Sungyeon Joh | Lighting Artist |
| Jason Johnston | Visual Effects |
| Craig Foster | Art Direction |
| Becky Neiman | Production Manager |
| Jamie Williams | Visual Effects Technical Director |
| Seong-Young Kim | Layout |
