Bernard (voice)
Bob Newhart
Miss Bianca (voice)
Eva Gabor
Gramps (voice)
Larry Clemmons
Evinrude / Brutus / Nero (voice)
James MacDonald
Rabbit (voice)
George Lindsey
TV Announcer (voice)
Bill McMillian
Digger (voice)
Dub Taylor
Owl (voice)
John Fiedler
Miss Bianca (singing voice, uncredited)
Robie Lester
American Deligate (voice) (uncredited)
Peter Renaday
Madame Medusa (voice)
Geraldine Page
Mr. Snoops (voice)
Joe Flynn
Ellie Mae (voice)
Jeanette Nolan
Luke (voice)
Pat Buttram
Orville (voice)
Jim Jordan
Rufus (voice)
John McIntire
Penny (voice)
Michelle Stacy
The Chairman (voice)
Bernard Fox
Animation Director
Don Bluth
Director
Wolfgang Reitherman
Producer
John Lounsbery
Author
Vance Gerry
Burny Mattinson
Ken Anderson
Frank Thomas
Animation
David Michener
Art Stevens
Executive Producer
Ron Miller
Ollie Johnston
Milt Kahl
Novel
Margery Sharp
Editor
James Melton
Original Music Composer
Artie Butler
Dick Sebast
James Koford
Fred Lucky
Ted Berman
Sound Supervisor
Herb Taylor
Songs
Carol Connors
Ayn Robbins
Sammy Fain