Humphrey Bogart

as Jean Matrac

Claude Rains

as Captain Freycinet

Michèle Morgan

as Paula Matrac

Philip Dorn

as Renault

Sydney Greenstreet

as Major Duval

Peter Lorre

as Marius

George Tobias

as Petit

Helmut Dantine

as Garou

John Loder

as Manning

Victor Francen

as Captain Patain Malo

Vladimir Sokoloff

as Grandpere

Eduardo Ciannelli

as Chief Engineer

Corinna Mura

as Singer

Peter Miles

as Jean Matrac Jr.

Hans Conried

as Jourdain

Mark Stevens

as Hastings

Marcelle Corday

as Grocer's Wife (uncredited)

Jean Del Val

Fred Essler

Charles La Torre

Konstantin Shayne

Hans Heinrich von Twardowski