Phil Harris

as O'Malley (voice)

Eva Gabor

as Duchess (voice)

Sterling Holloway

as Roquefort (voice)

Scatman Crothers

as Scat Cat (voice)

Paul Winchell

as Chinese Cat (voice)

Lord Tim Hudson

as English Cat (voice)

Vito Scotti

as Italian Cat (voice)

Thurl Ravenscroft

as Russian Cat (voice)