- Korty Films, Lucasfilm Ltd.
- Distributed by: Ladd Company, Warner Bros.
- Feature Length Theatrical Animated Film
- Cartoon Characters: Ralph the All-Purpose Animal, Synonamess Botch, Rod Rescueman, Scuzzbopper, Frivoli Foreman, Flora Fauna, Greensleeves, Chief of State, The Fairy Godmother.
- Vocal Talent: Lorenzo Music (Ralph), Marshall Efron (Synonamess Botch), James Cranna (Rod Rescueman, Scuzzbopper, Frivoli Foreman), Julie Payne (Flora Fauna), Hamilton Camp (Greensleeves), Paul Frees (Narrator, Chief of State, Judges, Bailiff), Gillian Gould (Sleeper), Geraldine Green (Sleeper), Larry Green (Sleeper), William Hall (Sleeper), David Korty (Sleeper), Elma Barry Robertson (Sleeper), Clyde E. Robertson (Sleeper), William Browder (Office Executive), Geoff Hoyle (Man in Elevator), J.E. Freeman (Pool Player), Elizabeth Saxon (Woman on Beach), Sue Murphy (File Clerk), Nancy Fish (Woman Under Dryer), Charles Dorsett (Man at Amusement Park), Judith Kahan Kampmann (The Fairy Godmother).
- Directed By John Korty, Charles Swenson.
- Produced By George Lucas (Executive Producer).
Associate Producers: Barbara Wright, Suella Kennedy.
- Written By John Korty, Charles Swenson, Suella Kennedy, Bill Couturié.
Story: Bill Couturié, Suella Kennedy, John Korty.
- Edited By Jennifer Gallagher.
Assistant Editors: Emily Craig, Ronald Jacobs, Nancy Jencks, Kathleen Korth, Mary Helen Leasman, Patrick McHugh, Karen Spangenberg, Julie Stept.
- Music By Ken Melville, Dawn Atkinson.
Song, "Heartbreak Town": Bruce Hornsby, John Hornsby.
Songs, "Twice Upon a Time", "Life is But a Dream", "Out On My Own": Tom Ferguson, Maureen McDonald.
Songs, "Twice Upon a Time", "Life is But a Dream": Michael McDonald.