Robert Vaughn
Napoleon Solo
David McCallum
Illya Kuryakin
Eduardo Ciannelli
Arturo 'Fingers' Stilletto
Allen Jenkins
Enzo 'Pretty' Stilletto
Jack La Rue
Federico 'Feet' Stilletto
Leo G. Carroll
Alexander Waverly
Joan Blondell
Mrs. 'Fingers' Stilletto
Ludwig Donath
Dr. Heinrich von Kronen
Will Kuluva
Mr. Thaler, Thrush Boss
Penny Santon
Grandma Monteri
Vincent Beck
Benjamin Luger
Maxie Rosenbloom
'Crunch' Battaglia
James Almanzar
Thrush Captain
Clarke Gordon
Thrush Officer
Sharyn Hillyer
Miss Gorgeous
Anne Caprile
Miss Diketon (french voice) (uncredited)
