Diabolik

John Phillip Law

Eva Kant

Marisa Mell

Inspector Ginko

Michel Piccoli

Ralph Valmont

Adolfo Celi

Police Chief

Claudio Gora

Minister of Interior / Minister of Finance

Terry-Thomas

Sergente Danek

Mario Donen

Minister's Assistant

Renzo Palmer

Rose

Annie Gorassini

Sir Harold Clark (uncredited)

Edward Febo Kelleng

Lady Clark

Caterina Boratto

Prostitute

Lucia Modugno

Dr. Vernier (uncredited)

Giulio Donnini

Lorry Driver

Carlo Croccolo

Policewoman

Lidia Biondi

Bank Manager

Andrea Bosic

Valmont's Henchman

Federico Boido

Rudy (uncredited)

Giorgio Gennari

Valmont's Henchman #1

Tiberio Mitri

Morgue Doctor

Giorgio Sciolette

Valmont's Henchman

Isarco Ravaioli

Tony (uncredited)

Giuseppe Fazio

Valmont's Henchman

Federico Boito

Stud (uncredited)

Sandro Dori

Valmont's Henchman (uncredited)

Wolfgang Hillinger

Fake Diplomat (uncredited)

Massimo Ciprari

Crematoria Operator (uncredited)

Francesco Mulè

Dr. Vernier's Nurse (uncredited)

Angela Palmieri

Old Woman at the Morgue (uncredited)

Regina Elena Bisio

Party Guest (uncredited)

Raniero Dorascenzi

Party Guest (uncredited)

Vezio Natili

Party Guest (uncredited)

Lella Cattaneo

Party Guest (uncredited)

Renzo Granelli

Party Guest (uncredited)

Mario Ingrassia

Party Guest (uncredited)

Filippo Perego

Party Guest (uncredited)

Domenico Ravenna

Party Guest (uncredited)

Guido Barlocci

Journalist at Press Conference (uncredited)

Ugo Ballester

Journalist at Press Conference (uncredited)

Enzo Mondino

Journalist at Press Conference (uncredited)

Carlo Micolano

Journalist at Press Conference (uncredited)

Ferruccio Fregonese

Journalist at Press Conference (uncredited)

Angelo Casadei

Journalist at Press Conference (uncredited)

Mario Pascucci

Journalist at Press Conference (uncredited)

Silvio Klein

Reporter (uncredited)

Oscar Sciamanna