Burt Lancaster
Ned Merrill

Janet Landgard
Julie Ann Hooper

Janice Rule
Shirley Abbott

Tony Bickley
Donald Westerhazy

Marge Champion
Peggy Forsburgh

Rose Gregorio
Sylvia Finney

David Garfield
Ticket Seller

Kim Hunter
Betty Graham

Charles Drake
Howard Graham

Bernie Hamilton
Chauffeur

House Jameson
Mr. Halloran

Jan Miner
Lillian Hunsacker

Diana Muldaur
Cynthia

Joan Rivers
Joan

Cornelia Otis Skinner
Mrs. Hammar

Dolph Sweet
Henry Biswanger

Louise Troy
Grace Biswanger

Diana Van der Vlis
Helen Westerhazy

Philip Bruns
Biswangers' Pool Party Guest (uncredited)

John Cheever
Man at Pool Party (uncredited)

Lisa Daniels
Matron at the Biswangers' Pool (uncredited)

Eleanor Perry
Woman at Pool Party (uncredited)

Frank Perry
Man at Pool Party (uncredited)