Richard Burton as SS-Obersturmbannführer Herbert Kappler

Marcello Mastroianni as Father Pietro Antonelli

Peter Vaughan as Field Marshal Albert Kesselring

Leo McKern as Gen. Kurt Maelzer

John Steiner as SS-Standartenführer Eugen Dollmann

Anthony Steel as SS-Sturmbannführer Domizlaf

Robert Harris as Father Pancrazio

Anthony Dawson as SS-Brigadeführer Wilhelm Harster

Guidarino Guidi as Interior Minister Guido Buffarini Guidi

Renzo Montagnani as Police Chief "Questore" Pietro Caruso

Dennis Burgess as SS-Obersturmführer Schultz

Brook Williams as SS-Hauptsturmführer Erich Priebke

Giancarlo Prete as Paolo

Delia Boccardo as Elena

Renzo Palmer as Giorgio

Duilio Del Prete as Partisan

Gustavo De Nardo as

Douglas Hare as Young German Soldier

Carlos de Carvalho as

Jacques Herlin as Giovanni

Shirley Corrigan as

Massimo Sarchielli as First partisan with watch on Via Rasella's window

Anthony Dawson as Lt. Col. Harster

Kippy Lancaster as

Nazzareno Natale as Partisan with glasses

Luigi Antonio Guerra as

Fiore Altoviti as

Ugo Cardea as Partisan

Luca Bonicalzi as

Giuliano Petrelli as

Marino Masé as Third partisan in Via rasella's window

Orazio Stracuzzi as Partisan with machine gun

Adolfo Lastretti as Man in via Rasella

Enzo Consoli as Real street cleaner in Via Rasella

Arnaldo Caivano as Ardeatine Massacre Victim (uncredited)

Regina Elena Bisio as Old Lady Carried Out (uncredited)