Barrie Ingham

as Basil of Baker Street / Bartholomew (voice)

Vincent Price

as Professor Ratigan (voice)

Val Bettin

as Dr. David Q. Dawson / Thug Guard (voice)

Susanne Pollatschek

as Olivia Flaversham (voice)

Candy Candido

as Fidget (voice)

Diana Chesney

as Mrs. Judson (voice)

Eve Brenner

as The Mouse Queen (voice)

Alan Young

as Mr. Flaversham (voice)