Fred MacMurray

as Harry Willard

Jane Wyman

as Katherine "Katie" Willard

Michael Callan

as Nick O'Mara

Deborah Walley

as Amy Willard

Jessie Royce Landis

as Countessa 'La Comtesse' DuFresne

Tommy Kirk

as Elliott Willard

Georgette Anys

as Madame Clebert

Kevin Corcoran

as Skipper Willard

Ivan Desny

as Rudolph Hunschak

Françoise Prévost

as The Girl

Alex Gerry

as Horace Bidwell

Howard Smith

as Judge Henderson

Max Showalter

as The Tight Suit

Doris Packer

as Mrs. Henderson

James Millhollin

as Ship's Librarian

Richard Wattis

as Party Guest

George Boyce

as Ship Passenger