Burl Ives as Phineas T. Barnum

Troy Donahue as Gaylord Sullivan

Gert Fröbe as Professor Siegfried von Bulow

Hermione Gingold as Angelica

Lionel Jeffries as Sir Charles Dillworthy

Dennis Price as The Duke of Barset

Daliah Lavi as Madelaine

Stratford Johns as Warrant Officer

Graham Stark as Bertram Grundle

Terry-Thomas as Captain Sir Harry Washington-Smythe

Renate von Holt as Anna Lindstrom

Jimmy Clitheroe as General Tom Thumb

Judy Cornwell as Lady Electra

Joachim Teege as Joachim Bulgeroff

Edward de Souza as Henri

Joan Sterndale-Bennett as Queen Victoria

Allan Cuthbertson as Colonel Scuttling - Scotland Yard Man

Derek Francis as Puddleby

Anthony Woodruff as Announcer

Hugh Walters as Carruthers

Donald Bisset as Jack Flood

Cecil Nash as Chambers

Vernon Hayden as Mr. Brown

John Franklyn as Railway Guard

Harry Brogan as Professor Dingle

Derek Young as French Officer of the Guard