Albert Brooks as Marlin (voice)

Ellen DeGeneres as Dory (voice)

Alexander Gould as Nemo (voice)

Willem Dafoe as Gill (voice)

Geoffrey Rush as Nigel (voice)

Brad Garrett as Bloat (voice)

Allison Janney as Peach (voice)

Austin Pendleton as Gurgle (voice)

Stephen Root as Bubbles (voice)

Vicki Lewis as Deb / Flo (voice)

Joe Ranft as Jacques (voice)

Andrew Stanton as Crush (voice)

Elizabeth Perkins as Coral (voice)

Nicholas Bird as Squirt (voice)

Bob Peterson as Mr. Ray / Additional Voices (voice)

Barry Humphries as Bruce (voice)

Eric Bana as Anchor (voice)

Bruce Spence as Chum (voice)

Bill Hunter as Dentist (voice)

LuLu Ebeling as Darla (voice)

Jordan Ranft as Tad (voice)

Erica Beck as Pearl (voice)

Erik Per Sullivan as Sheldon (voice)

John Ratzenberger as Fish School (voice)

Carlos Alazraqui as Additional Voices (voice)

Alec Medlock as Additional Voices (voice)

Bob Bergen as Additional Voices (voice)

Nicole Miller as Additional Voices (voice)

Geoff Brooks as Additional Voices (voice)

Lisa Peers as Additional Voices (voice)

Paul Eiding as Additional Voice (voice)

Phil Proctor as Additional Voices (voice)

Leland Grossman as Additional Voices (voice)

Daryl Sabara as Additional Voices (voice)

Lili Ishida as Additional Voices (voice)

Emmett Shoemaker as Additional Voices (voice)

Oliver Kindred as Additional Voices (voice)

Ben Stanton as Additional Voices (voice)

Danny Mann as Additional Voices (voice)

Kali Whitehurst as Additional Voices (voice)

Rove McManus as Additional Voices (voice)

James S. Baker as Additional Voices (voice)

Vanessa Marano as Additional Voices (voice)

Susan Blu as Additional Voices (voice)

Annelise Nolting as Additional Voices (voice)

Jeff Pidgeon as Additional Voices (voice)

Jennifer Darling as Additional Voices (voice)

Aaron Fors as Additional Voices (voice)

Katherine Ringgold as Additional Voices (voice)

Jess Harnell as Additional Voices (voice)

David Ian Salter as Additional Voices (voice)

Caroline Kindred as Additional Voices (voice)

Sherry Lynn as Additional Voices (voice)

Jim Ward as Additional Voices (voice)

Mickie McGowan as Additional Voices (voice)

Jack Angel as Additional Voices (voice)

Laura Marano as Additional Voices (voice)

Bobby Block as Additional Voices (voice)

Laraine Newman as Additional Voices (voice)

Jane Carr as Additional Voices (voice)

Jessie Flower as Additional Voices (voice)

Jan Rabson as Additional Voices (voice)

Bradley Trevor Greive as Additional Voices (voice)

Evan Sabara as Additional Voices (voice)

Marc John Jefferies as Additional Voices (voice)

Eliza Schneider as Additional Voices (voice)

Lee Unkrich as Additional Voices (voice)

Noah Luke as Additional Voices (voice)