Credits

• 1989 · The Hell's Gate as Dr. Johns
• 1987 · Wartime as professor Amundsen
• 1979 · Seven Dangerous Women as Enrico Cavallari
• 1978 · Return of the Saint as Scheffer
• 1978 · The War of the Robots as Roger
• 1978 · Covert Action as Grant
• 1978 · The Biggest Battle as American Commando Leader
• 1978 · Blue Nude as Donovan
• 1977 · The Bloodsucker Leads the Dance as Count Richard Marnack
• 1977 · Twilight of Love as Guide
• 1977 · Casanova & Co. as Marquis Coppafrata (uncredited)
• 1976 · Violence for Kicks as Stefano's father
• 1976 · Emanuelle in Bangkok as Jimmy
• 1975 · Reflections in Black as Anselmi
• 1975 · The Portrait of a Lady as Caspar Goodwood
• 1975 · Zorro as Fritz von Merkel
• 1974 · The Murri Affair as Riccardo Murri
• 1974 · The Minor as Carlo Salvi (as Giacomo Rossi-Stuart)
• 1974 · The Last Four Days as Jack Donati
• 1973 · The Fighting Fists of Shanghai Joe as Tricky
• 1973 · The Off-Road Girl as Giulio Morganti
• 1973 · Death Smiles on a Murderer as Dr. von Ravensbrück - Walter's Father
• 1973 · The Lonely Woman as Richard Leighton
• 1973 · Mafia Junction as Marco
• 1972 · The Girl with the Moon Skin as Giacomo
• 1972 · The Crimes of the Black Cat as Victor Morgan
• 1972 · You're Jinxed, Friend, You've Met Sacramento as Tom Murdock
• 1972 · The Godfather as G.I. (uncredited)
• 1972 · Ben & Charlie as Hawkins, Pinkerton detective
• 1972 · The Murder of Julius Caesar as Brutus
• 1971 · The Double as Giovanni's Brother
• 1971 · The Night Evelyn Came Out of the Grave as Dr. Richard Timberlane
• 1971 · Something Creeping in the Dark as Donald Forrest
• 1971 · Kill Django...Kill First as Johnny MaGee / Django
• 1970 · The Weekend Murders as Ted Collins
• 1970 · Hornets' Nest as Schwalberg
• 1970 · Churchill's Leopards as Major Powell
• 1970 · The Last Day of the War as Pvt. Kendall
• 1970 · The Night of the Assassin as Lt. Tibbitt
• 1969 · The 5-Man Army as One of Gutierrez' Officers
• 1969 · Shadow of Death as Gert Muller
• 1969 · The Battle of the Damned as Major Carter
• 1969 · Guess Who's Coming for a Snack? as Comandante del Lager
• 1968 · Zorro the Fox as Don Pedro
• 1968 · Ragan as Kohler
• 1968 · Bloody Che Contra as Prado
• 1968 · Colpo sensazionale al servizio del Sifar as
• 1967 · An Eye for an Eye, A Tooth for a Tooth as Jeff Gordon / Agent Z-55
• 1967 · The Glass Sphinx as Ray
• 1967 · Snow Devils as Cmdr. Rod Jackson
• 1966 · The Big Blackout as Roland
• 1966 · Ring Around the World as Hitman
• 1966 · War Between the Planets as Cmdr. Rod Jackson
• 1966 · Kill, Baby... Kill! as Dr. Paul Eswai
• 1966 · Knives of the Avenger as King Arald
• 1966 · Degueyo as Norman Sandel
• 1965 · Duel at Sundown as Quents
• 1964 · Kidnapped to Mystery Island as Tremal Naik
• 1964 · The Revenge of the Gladiators as Fulvio
• 1964 · Seven Slaves Against the World as Gaius
• 1964 · Massacre At Grand Canyon as Sheriff Burt Cooley
• 1964 · The Last Man on Earth as Ben Cortman
• 1964 · Temple of the White Elephant as Reginald Milliner
• 1964 · Badmen of the West as Sheriff Gary Smith
• 1963 · Arms of the Avenger as Vannozzo Duchesca
• 1963 · Gunfight at Red Sands as Sheriff Lance Corbett
• 1963 · Zorro and the Three Musketeers as Athos
• 1963 · The Shortest Day as Soldato austriaco (uncredited)
• 1963 · Catherine of Russia as Count Poniatowski
• 1962 · The Avenger as Eurialo
• 1962 · The Reluctant Saint as
• 1962 · Sodom and Gomorrah as Ishmael
• 1962 · Invasion 1700 as (as Giacomo Rossi-Stuart)
• 1961 · Slave of Rome as
• 1960 · Five Branded Women as
• 1959 · The Night of the Great Attack as
• 1959 · Caltiki, the Immortal Monster as Prof. Rodriguez's Assistant
• 1959 · Knight Without a Country as Ruggero
• 1958 · The Day the Sky Exploded as Stuart (uncredited)
• 1958 · The Silent Enemy as Rosati
• 1957 · Il conte di Matera as il duca Paolo Bressi
• 1956 · The House of Intrigue as Henry
• 1955 · The Red Cloak as
• 1953 · Jeunes mariés as