Cast

• John Goodman James P. "Sulley" Sullivan (voice)
• Billy Crystal Mike Wazowski (voice)
• Mary Gibbs Boo / Mary (voice)
• Steve Buscemi Randall Boggs (voice)
• James Coburn Henry J. Waternoose (voice)
• Jennifer Tilly Celia (voice)
• Bob Peterson Roz (voice)
• John Ratzenberger The Abominable Snowman (voice)
• Frank Oz Fungus (voice)
• Daniel Gerson Needleman / Smitty (voice)
• Steve Susskind Floor Manager (voice)
• Bonnie Hunt Flint (voice)
• Jeff Pidgeon Bile (voice)
• Samuel Lord Black George Sanderson (voice) (as Sam Black)
• Jack Angel Additional Voice (voice)
• Bob Bergen Additional Voice (voice)
• Rodger Bumpass Additional Voice (voice)
• Gino Conforti Additional Voice (voice)
• Jennifer Darling Additional Voice (voice)
• Patti Deutsch Additional Voice (voice)
• Pete Docter Additional Voice (voice)
• Bobby Edner Additional Voice (voice)
• Ashley Edner Additional Voice (voice)
• Paul Eiding Additional Voice (voice)
• Katie Scarlett Additional Voice (voice) (as Katie Evans)
• Bill Farmer Additional Voice (voice)
• Keegan Farrell Additional Voice (voice)
• Pat Fraley Additional Voice (voice)
• Teresa Ganzel Additional Voice (voice) (as Terese Ganzel)
• Taylor Gifaldi Additional Voice (voice)
• Marc John Jefferies Additional Voice (voice)
• Joe Lala Additional Voice (voice)
• Noah Luke Additional Voice (voice)
• Sherry Lynn Additional Voice (voice)
• Danny Mann Additional Voice (voice)
• Mona Marshall Additional Voice (voice)
• Mickie McGowan Additional Voice (voice)
• Laraine Newman Additional Voice (voice)
• Kay Panabaker Additional Voice (voice)
• Bret 'Brook' Parker Additional Voice (voice) (as Bret Parker)
• Phil Proctor Additional Voice (voice)
• Josh Qualtieri Additional Voice (voice)
• Guido Quaroni Additional Voice (voice)
• Jan Rabson Additional Voice (voice)
• Lisa Raggio Additional Voice (voice)
• Joe Ranft Additional Voice (voice)
• Sophia Ranft Additional Voice (voice)
• Katherine Ringgold Additional Voice (voice)
• Bob Scott Additional Voice (voice)
• David Silverman Additional Voice (voice)
• Jim Thornton Additional Voice (voice)
• Lee Unkrich Additional Voice (voice)
• Wallace Shawn Rex the Green Dinosaur (outtakes) (uncredited)

Writers

• Pete Docter
• Jill Culton
• Jeff Pidgeon
• Ralph Eggleston
• Andrew Stanton
• Daniel Gerson
• Robert L. Baird
• Rhett Reese
• Jonathan Roberts

Producers

• Darla K. Anderson
• John Lasseter
• Kori Rae
• Andrew Stanton