Zero Mostel as Pseudolus

Jack Gilford as Hysterium

Phil Silvers as Marcus Lycus

Buster Keaton as Erronius

Michael Crawford as Hero

Annette Andre as Phillia

Michael Hordern as Senex

Leon Greene as Miles Gloriosus

Roy Kinnear as Gladiator Instructor

Alfie Bass as Gatekeeper

John Bluthal as Roman Chief Guard

Pamela Brown as High Priestess

Patricia Jessel as Domina

Beatrix Lehmann as Domina's Mother

Frank Thornton as Slave Driver

Peter Butterworth as Roman Sentry

John Bennett as Pseudolus' mark

Andrew Faulds as Roman

Jennifer Baker as Geminae #1

Susan Baker as Geminae #2

Ronnie Brody as Roman Soldier

Frank Elliott as

Lucienne Bridou as Panacea

Helen Funai as Tintinabula

Bill Kerr as Gladiator-in-Training

Jack May as Shopkeeper

Inga Nielsen as Gymnasia

Jon Pertwee as Crassus

Janet Webb as Fertilla

Myrna White as Vibrata

Ingrid Pitt as Courtesan (uncredited)

Ricardo Palacios as Marcus Lycus's Eunuch (uncredited)

Joey Hamlin as Young boy (uncredited)

Joaquín Gómez as Aerialist (uncredited)

Thurl Ravenscroft as Voice (uncredited)