France Anglade

as Clémentine Bellus

Michel Serrault

as Maître Brunet

Pierre Doris

as Gaston Bellus

Philippe Noiret

as Edgar Hoover

Jacques Dufilho

as Spanish maid

Noël Roquevert

as FBI Concierge

Adrienne Servantie

as Yvonne Bellus

Max Montavon

as FBI elevator operator

Michel Galabru

as FBI engineer

Jean Tissier

as Versigny

Jean Richard

as Auguste

Claude Nicot

as Alain

Guy Lux

as Self

Bernard Dumaine

as Television director

Dany Logan

as Self - guest who twists to the music of Mozart

André Badin

as Concierge of Passy

Rita Pavone

as Self (uncredited)

Francis Blanche

as Nuisance at the Miss ceremony (uncredited)

Charles Bayard

as Passerby who says "Quelle époque" (uncredited)

Marcel Loche

as Member of the FBI board of directors (uncredited)

Léon Zitrone

as Self (archive footage) (uncredited)

Jean-Claude Michel

as Narrator (voice) (uncredited)