| Title | Year | Status | Character |
|---|
| Le porte dell'inferno | 1989 | | Dr. Johns |
| Una grande storia d'amore | 1988 | TV Movie as Giacomo Rossi-Stuart | |
| Tempi di guerra | 1987 | | Professor Amundsen |
| L'amante dell'Orsa Maggiore | 1983 | TV Mini-Series | Il Chiodo |
| L'eredità della Priora | 1980 | TV Mini-Series | Gombi |
| Mani di velluto | 1979 | | Aufsichtsrat bei Suisse Assurance (uncredited) |
| 7 ragazze di classe | 1979 | | Enrico Cavallari (as Giacomo Rossi-Stuart) |
| Return of the Saint | 1979 | TV Series | Inspector Scheffer |
| Covert Action | 1978 | | Grant (as Giacomo Rossi-Stuart) |
| War of the Robots | 1978 | | Roger (as James R. Stuart) |
| The Biggest Battle | 1978 | | American commando leader |
| Blue Nude | 1978 | | Donovan (as Jack Stuart) |
| La notte dell'alta marea | 1977 | | Guide (as Giacomo Rossi-Stuart) |
| Some Like It Cool | 1977 | | Marquis Coppafrata (uncredited) |
| I violenti di Roma bene | 1976 | | Stefano's father (as Giacomo Rossi-Stuart) |
| Emanuelle in Bangkok | 1976 | | Jimmy (as Giacomo Rossi-Stuart) |
| Rosso veneziano | 1976 | TV Mini-Series | Tullio Moscato |
| The Bloodsucker Leads the Dance | 1975 | | Count Richard Marnack (as Giacomo Rossi-Stuart) |
| Il vizio ha le calze nere | 1975 | | Anselmi (as Giacomo Rossi-Stuart) |
| Ritratto di signora | 1975 | TV Mini-Series | Caspar Goodwood |
| Zorro | 1975/I | | Fritz von Merkel |
| The Murri Affair | 1974 | | Riccardo Murri (as Giacomo Rossi-Stuart) |
| La minorenne | 1974 | | Carlo Salvi (as Giacomo Rossi-Stuart) |
| Philo Vance | 1974 | TV Mini-Series | Pop Cleaver |
| The Last 4 Days | 1974 | | Jack Donati |
| La ragazza dalla pelle di luna | 1974 | as Giacomo Rossi-Stuart | |
| Shanghai Joe | 1973 | | Tricky the Gambler (as Giacomo Rossi-Stuart) |
| The Lonely Woman | 1973 | | Richard Leighton (as Giacomo Rossi-Stuart) |
| La ragazza fuoristrada | 1973 | | Giulio Morganti (as Giacomo Rossi-Stuart) |
| Death Smiles on a Murderer | 1973 | | Dr. von Ravensbrück, Walter's Father |
| Mafia Junction | 1973 | | Marco |
| Sette scialli di seta gialla | 1972 | | Victor Morgan (as Giacomo Rossi-Stuart) |
| Sei iellato, amico hai incontrato Sacramento | 1972 | | Tom Murdock (as Giacomo Rossi-Stuart) |
| Amigo, Stay Away | 1972 | | Hawkins, Pinkerton detective (as Giacomo Rossi-Stuart) |
| La controfigura | 1971 | | Giovanni's Brother |
| The Night Evelyn Came Out of the Grave | 1971 | | Dr. Richard Timberlane |
| Something Creeping in the Dark | 1971 | | Donald Forres |
| Kill Django... Kill First | 1971 | | Johnny (as Giacomo Rossi-Stuart) |
| Concerto per pistola solista | 1970 | | Ted Collins |
| Hornets' Nest | 1970 | | Schwalberg (as Giacomo Rossi-Stuart) |
| Churchill's Leopards | 1970 | | Major Powell (as Giacomo Rossi-Stuart) |
| El último día de la guerra | 1970 | | Pvt. Kendall (as Jack Stuart) |
| Appuntamento col disonore | 1970 | | Lt. Tibbitt (as Giacomo Rossi-Stuart) |
| The Five Man Army | 1969 | | One of Gutierrez' Officers |
| Bloody Che Contra | 1969 | | Prado (as Jack Stuart) |
| Macabre | 1969 | | Gert Muller (as Jack Stuart) |
| The Battle of the Damned | 1969 | | Major Carter (as Giacomo Rossi-Stuart) |
| Indovina chi viene a merenda? | 1969 | | Comandante del Lager (as Giacomo Rossi-Stuart) |
| Crime Story | 1968 | as Jack Stuart | |
| Zorro the Fox | 1968 | | Don Pedro (as Jack Stuart) |
| Ragan | 1968 | | Kohler (as Jack Stuart) |
| Destino: Estambul 68 | 1967 | | Jeff Gordon / Agent Z-55 (as Jack Stuart) |
| The Glass Sphinx | 1967 | | Ray (as Jack Stuart) |
| Snow Devils | 1966 | | Cmdr. Rod Jackson (as Jack Stuart) |
| Perry Grant, agente di ferro | 1966 | | Roland (as Jack Stuart) |
| Ring Around the World | 1966 | | Hitman (as Jack Stuart) |
| War Between the Planets | 1966 | | Cmdr. Rod Jackson (as Jack Stuart) |
| Kill Baby, Kill | 1966 | | Dr. Paul Eswai (as Giacomo Rossi-Stuart) |
| Knives of the Avenger | 1966 | | King Arald (as Jack Stuart) |
| Degueyo | 1966 | | Norman Sandel (as Jack Stuart) |
| Duel at Sundown | 1965 | | Quents (as Giacomo Rossi-Stuart) |
| Badmen of the West | 1964 | | Marshal Gary Smith (as J.R. Stuart) |
| Kidnapped to Mystery Island | 1964 | | Tremal Naik (as Giacomo Rossi-Stuart) |
| La vendetta di Spartacus | 1964 | | Fulvius (as Giacomo Rossi-Stuart) |
| Gli schiavi più forti del mondo | 1964 | | Gaius (as Giacomo Rossi-Stuart) |
| Grand Canyon Massacre | 1964 | | Sheriff Burt Cooley (as G.R. Stuart) |
| Sandok, il Maciste della giungla | 1964 | | Reginald Milliner |
| The Last Man on Earth | 1964 | | Ben Cortman (as Giacomo Rossi-Stuart) |
| Arms of the Avenger | 1963 | as Giacomo Rossi-Stuart | |
| Gunfight at Red Sands | 1963 | | Sheriff Lance Corbett (as G.R. Stuart) |
| The Shortest Day | 1963 | | Soldato austriaco (uncredited) |
| Zorro e i tre moschettieri | 1963 | | Athos |
| Catherine of Russia | 1963 | | Count Poniatowski (as Giacomo Rossi-Stuart) |
| The Avenger | 1962 | | Euryalus (as Giacomo Rossi-Stuart) |
| Sodom and Gomorrah | 1962 | | Ishmael |
| Invasion 1700 | 1962 | as Giacomo Rossi-Stuart | |
| Slave of Rome | 1961 | | Claudius (as Giacomo Rossi-Stuart) |
| 5 Branded Women | 1960 | | |
| Tales of the Vikings | 1960 | TV Series | Rurik |
| The Night of the Great Attack | 1959 | | Count Fabio |
| Caltiki, the Immortal Monster | 1959 | | Prof. Rodríguez's Assistant (as G.R. Stuart) |
| Il cavaliere senza terra | 1959 | | Ruggero (as Giacomo Rossi-Stuart) |
| The Flying Doctor | 1959 | TV Series | |
| La morte viene dallo spazio | 1958 | | Stuart (as Giacomo Rossi-Stuart) |
| Il conte di Matera (Il tiranno) | 1958 | | Duca Paolo Bressi (as Giacomo Rossi-Stuart) |
| The Silent Enemy | 1958 | | Rosati (as Giacomo Rossi-Stuart) |
| A Farewell to Arms | 1957 | | Carabiniere (uncredited) |
| Captain Gallant of the Foreign Legion | 1956-1957 | TV Series | Sgt. Rousseau / Sgt. Andre Rousseau |
| The House of Intrigue | 1956 | | Henry (as Giacomo Rossi-Stuart) |
| War and Peace | 1956 | | Young Cossack (uncredited) |
| Il mantello rosso | 1955 | | |
| Jeunes mariés | 1953 | as Giacomo Rossi | |
$1.6 Million
