Charles Laughton
— Jocko Wilson
Binnie Barnes
— Aggie Dawlins
Richard Carlson
— Nipper Wilson
Donna Reed
— Mary Wilson
Christopher Severn
— Nipper Wilson (child)
Clyde Cook
— Ginger Gaffney
Stephen McNally
— Dusty Rhodes
Arthur Shields
— Father Polycarp
Evelyn Falke
— Mary, as a child
Hobart Cavanaugh
— Boots
André Charlot
— Father Antoine
Peter Lawford
— Mr. Jones
Luis Alberni
— Dino Piza
Eily Malyon
— Sarah
Ian Wolfe
— Soldier
Freddie Steele
— Terry McGroth - Boxer (uncredited)
Philip Ahn
— English-Speaking Japanese Aviator (uncredited)
Richard Ainley
— Military Doctor (uncredited)
Luis Alberni
— Dino Piza (uncredited)
Eric Alden
— Newsman (uncredited)
Jimmy Aubrey
— Tipsy Anzac Soldier (uncredited)