Big Jim McLain

John Wayne

as Jim McLain

Nancy Olson

as Nancy Vallon

James Arness

as Mal Baxter

Alan Napier

as Sturak

Veda Ann Borg

as Madge

Hans Conried

as Robert Henried

Hal Baylor

as Poke

Gayne Whitman

as Dr. Gelster

Gordon Jones

as Olaf

Robert Keys

as Edwin White

John Hubbard

as Lt. Cmdr. Clint Grey

Soo Yong

as Mrs. Namaka

Paul Hurst

as Mr. Lexiter

Sarah Padden

as Mrs. Lexiter