Anthony Quinn as The Basque

James Mason as Professor Bergson

Malcolm McDowell as Capt. Von Berkow

Patricia Neal as Mrs. Bergson

Kay Lenz as Leah Bergson

Paul Clemens as Paul Bergson

Christopher Lee as Gypsy

Michael Lonsdale as Renoudot

Robert Rhys as Gypsy Son

Marcel Bozzuffi as Perea

Peter Arne as Guide

Neville Jason as Lt. Reinke

Robert Brown as Major

Rose Alba as Madame Alba

Jim Broadbent as German Soldier (uncredited)

Frederick Jaeger as German Major (uncredited)