Roman Polanski

Trelkovsky

Isabelle Adjani

Stella

Melvyn Douglas

Monsieur Zy

Jo Van Fleet

Madame Dioz

Bernard Fresson

Scope

Shelley Winters

The Concierge

Lila Kedrova

Madame Gaderian

Claude Dauphin

Husband at accident

Claude Piéplu

Neighbour

Rufus

Georges Badar

Gérard Jugnot

Office Clerk

Josiane Balasko

Viviane, Office Worker

Michel Blanc

Scope's Neighbor

Jacques Monod

Cafe Owner

Patrice Alexsandre

Robert

Jacques Chevalier

Patron

David Gabison

Witness at accident

Bernard-Pierre Donnadieu

Bar waiter

Alain Frérot

Begger

Éva Ionesco

Bettina, Madame Gaderian's daughter

Héléna Manson

Head Nurse

François Viaur

Police Sergeant

Albert Delpy

Neighbor (uncredited)

Bruce Lee

Bruce Lee (archive footage) (uncredited)

Alain Sarde

Peeping tom (uncredited)

Philippe Sarde

Man staring at Trelkovsky in the movie theatre (uncredited)

Marie-Christine Descouard

One of the women at the bar (uncredited)