Dominique Sanda

Lou Andreas Salomé

Erland Josephson

Friedrich Nietzsche

Robert Powell

Paul Rée

Virna Lisi

Elizabeth Nietzsche

Michael Degen

Karl Andreas

Elisa Cegani

Franziska Nietzsche

Umberto Orsini

Bernard Foester

Philippe Leroy

Peter Gast

Carmen Scarpitta

Malvida

Nicoletta Machiavelli

Amanda

Amadeo Amodio

Dr. Dulcamara

Elisabeth Wiener

Greta (credited as Elisabeth Winer)

Roberto Bruni

Professor Julius Longbehn

Mircha Carven

Wolfgang

Clara Algranti

Teresa

Renato Scarpa

Psychiatrist

Francesca Muzio

Maria

Anita Höfer

Prostitute at Station (credited as Anita Hofer)

Vinicio Diamanti

Lars Bloch

German Friend (uncredited)

Ritza Brown

Young Sicilian Prostitute (uncredited)

Guido Cerniglia

Guest in Malvida's House (uncredited)

Clara Colosimo

Trude (uncredited)

Geoffrey Copleston

Guest in Malvida House (uncredited)

Elvira Cortese

Maid (uncredited)

Catharina Dahlin

Prostitute (uncredited)

Marina Hedman

Prostitute (uncredited)

Piero Morgia

Young Man in Pub (uncredited)