Zero Mostel

Pseudolus

Jack Gilford

Hysterium

Phil Silvers

Marcus Lycus

Buster Keaton

Erronius

Michael Crawford

Hero

Annette Andre

Phillia

Michael Hordern

Senex

Leon Greene

Miles Gloriosus

Roy Kinnear

Gladiator Instructor

Alfie Bass

Gatekeeper

John Bluthal

Roman Chief Guard

Pamela Brown

High Priestess

Patricia Jessel

Domina

Beatrix Lehmann

Domina's Mother

Frank Thornton

Slave Driver

Peter Butterworth

Roman Sentry

John Bennett

Andrew Faulds

Jennifer Baker

Geminae #1

Susan Baker

Geminae #2

Ronnie Brody

Roman Soldier

Frank Elliott

Lucienne Bridou

Panacea

Helen Funai

Tintinabula

Bill Kerr

Gladiator-in-Training

Jack May

Shopkeeper

Inga Nielsen

Gymnasia

Jon Pertwee

Crassus

Janet Webb

Fertilla

Myrna White

Vibrata

Ingrid Pitt

Courtesan (uncredited)

Ricardo Palacios

Marcus Lycus's Eunuch (uncredited)

Joey Hamlin

Young boy (uncredited)

Joaquín Gómez

Aerialist (uncredited)

Thurl Ravenscroft

Voice (uncredited)