Gian Maria Volonté as Zenone

Sami Frey as Prieur des Cordeliers

Anna Karina as Catherine

Philippe Léotard as Henri-Maximilien

Jacques Lippe as Myers

Jean Bouise as Campanus

Marie-France Pisier as Martha

Mathieu Carrière as Pierre de Hamaere

Nadine Uwampa as La Moricaude

Marie-Christine Barrault as Hilzonde

Mathieu Carrière as Pierre

Johan Leysen as Rombaut

Pierre Dherte as Cyprien

Isabelle Roelandt as Idelette

Dora van der Groen as Greete

Christian Maillet as Philibert

Jules-Henri Marchant as L'évêque

Senne Rouffaer as Le Cocq

Roger Van Hool as L'officier

Harry Cleven as L'officier

Serge-Henri Valcke as Capitaine du bateau

Linda Schagen Van Leeuwen as Fille Citrouille

Lucienne De Nutte as La Femme Brûlée

Christian Baggen as Le Valet

Herbert Flack as Pouvoir

Paule Herreman as La Citrouille

Gregory Kevers as Henri-Maximilien enfant

David Larock Moerenhout as Zenon enfant

Alexandre von Sivers as Deuxième théologien

Gaëtan Wenders as Un moine (uncredited)