On screen
Cast
22 credited performers
Malcolm McDowell
Caligula
Teresa Ann Savoy
Drusilla
Helen Mirren
Caesonia
Peter O'Toole
Tiberius
John Steiner
Longinus
Artwork unavailable
Guido Mannari
Macro
Paolo Bonacelli
Chaerea
Leopoldo Trieste
Charicles
Giancarlo Badessi
Claudius
Mirella D'Angelo
Livia
Anneka Di Lorenzo
Messalina
Lori Wagner
Agrippina
Adriana Asti
Ennia
John Gielgud
Nerva
Artwork unavailable
Bruno Brive
Gemellus
Artwork unavailable
Rick Parets
Mnester
Artwork unavailable
Paula Mitchell
Subura Singer
Osiride Pevarello
Giant
Donato Placido
Proculus
Angela La Vorgna
Tortured Slave (uncredited)
John Stacy
Senator Acesio
Pietro Torrisi
Muscleman on Decapitation Machine/Imperial Brothel Client(uncredited)