Gregory Peck as Captain Jonathan Clark

Ann Blyth as Countess Marina Selanova

Anthony Quinn as Portugee

John McIntire as Deacon Greathouse

Carl Esmond as Prince Semyon

Sig Ruman as General Ivan Vorashilov

Andrea King as Mamie

Eugenie Leontovich as Anna Selanova

Bill Radovitch as Ogeechuk

Rhys Williams as Eben Cleggett

Hans Conried as Eustace

Bryan Forbes as William Cleggett

Eve Whitney as Lilly

Chuck Hayward as Guest (uncredited)

Henry Kulky as Peter, Russian Servant

Gregory Gaye as Colonel Paul Shushaldin

Carl Andre as Seaman

Roman Arnoldoff as Captain Feodor

Suzan Ball as Uncredited

Gregg Barton as Seaman

June McCall as Mamie's Girl

Milicent Patrick as Lena

Susan Randall as Mamie's Girl

Dick Rich as Tough Sailor

Hugh Prosser as Mounted Cossack Officer

Tudor Owen as Old Sailor