Bob Hope as Robert Leslie Hunter

Fernandel as Fernydel

Anita Ekberg as Zara

Martha Hyer as Ann McCall

Preston Sturges as Serge Vitry

André Morell as American Ambassador

Alan Gifford as American Consul

Maurice Teynac as Doctor Bernais

Yves Brainville as Inspector Dupont

Jean Murat as Judge

Charles Bouillaud as Porter (uncredited)

Jean Daurand as (uncredited)

Gil Delamare as (uncredited)

Marcel Pérès as Institute guard (uncredited)

Roger Tréville as Patient (uncredited)

Irène Tunc as Shipboard Lovely (uncredited)

Hans Verner as Gangster (uncredited)

Paul Violette as Institute guard (uncredited)