Sophia Loren as Epifania Parerga

Peter Sellers as Dr. Kabir

Vittorio De Sica as Joe

Alastair Sim as Sagamore

Dennis Price as Adrian

Gary Raymond as Alastair

Miriam Karlin as Mrs. Joe

Noel Purcell as Professor Merton

Virginia Vernon as Polly Smith

Eleanor Summerfield as Mrs. Willoughby

Pauline Jameson as Muriel Pilkington

Alfie Bass as Fish Curer

Graham Stark as Butler

Diana Coupland as Nurse

Willoughby Goddard as President

Basil Hoskins as First Secretary

Gordon Sterne as Second Secretary

Tempe Adam as Gloria

Wally Patch as Whelk Seller

Charles Hill as Corelli

Derek Nimmo as 3rd Secretary (uncredited)

Peter Sallis as Minor Role (uncredited)