Kent Rogers
Horton / Peter Lorre Fish (voice) (uncredited)
Kent Rogers
Horton / Peter Lorre Fish (voice) (uncredited)
Sara Berner
Maysie / Baby (voice) (uncredited)
Mel Blanc
Mouse / Hunters / Audience Member (voice) (uncredited)
Frank Graham
Narrator (voice) (uncredited)
Robert Clampett
Various (voice) (uncredited)
Dr. Seuss
Novel
Carl W. Stalling
Music
Robert Clampett
Director
Leon Schlesinger
Producer