| The Bloodsucker Leads the Dance | 1975 | Count Richard Marnack | Movie |
| Vice Wears Black Hose | 1975 | Anselmi | Movie |
| Zorro | 1975 | Fritz von Merkel (as Giacomo Rossi Stuart) | Movie |
| Fatti di gente perbene | 1974 | Riccardo Murri | Movie |
| La minorenne | 1974 | Carlo Salvi | Movie |
| The Last 4 Days | 1974 | Jack Donati (as Giacomo Rossi Stuart) | Movie |
| Death Smiles on a Murderer | 1973 | Dr. von Ravensbrück, Walter's Father | Movie |
| Shanghai Joe | 1973 | Tricky the Gambler | Movie |
| Mafia Junction | 1973 | Marco | Movie |
| The Lonely Woman | 1973 | Richard Leighton (as Giacomo Rossi-Stuart) | Movie |
| Ben and Charlie | 1972 | Hawkins, Pinkerton detective | Movie |
| The Crimes of the Black Cat | 1972 | Victor Morgan | Movie |
| The Godfather | 1972 | G.I. | Movie |
| La ragazza dalla pelle di luna | 1972 | Giacomo | Movie |
| The Double | 1971 | Giovanni's Brother (as Giacomo Rossi Stuart) | Movie |
| The Night Evelyn Came Out of the Grave | 1971 | Dr. Richard Timberlane | Movie |
| Kill Django... Kill First | 1971 | Johnny | Movie |
| Something Creeping in the Dark | 1971 | Donald Forres | Movie |
| Appuntamento col disonore | 1970 | Lt. Tibbitt | Movie |
| Hornets' Nest | 1970 | Schwalberg | Movie |
| Churchill's Leopards | 1970 | Major Powell | Movie |
| The Weekend Murders | 1970 | Ted Collins | Movie |
| The Five Man Army | 1969 | One of Gutierrez' mexican officers (as Jack Stuart) | Movie |
| Indovina chi viene a merenda? | 1969 | Comandante del Lager (as Giacomo Rossi-Stuart) | Movie |
| Bloody Che Contra | 1968 | Prado (as Jack Stuart) | Movie |
| Zorro the Fox | 1968 | Don Pedro (as Jack Stuart) | Movie |
| Crime Story | 1968 | (as Jack Stuart) | Movie |
| The Snow Devils | 1967 | Cmdr. Rod Jackson | Movie |
| The Glass Sphinx | 1967 | Ray (as Jack Stuart) | Movie |
| Knives of the Avenger | 1966 | King Arald (as Jack Stuart) | Movie |
| Kill, Baby... Kill! | 1966 | Dr. Paul Eswai (as Giacomo Rossi-Stuart) | Movie |
| War Between the Planets | 1966 | Cmdr. Rod Jackson | Movie |
| Degueyo | 1966 | Norman Sandel | Movie |
| Ring Around the World | 1966 | (as Jack Stuart) | Movie |
| Duel at Sundown | 1965 | Quents | Movie |
| The Last Man on Earth | 1964 | Ben Cortman (as Giacomo Rossi-Stuart) | Movie |
| Grand Canyon Massacre | 1964 | Sheriff Burt Cooley | Movie |
| Kidnapped to Mystery Island | 1964 | Tremal Naik | Movie |
| Sandok, il Maciste della giungla | 1964 | Reginald Milliner | Movie |
| Seven Slaves Against the World | 1964 | Gaius | Movie |
| La vendetta di Spartacus | 1964 | Fulvius | Movie |
| Arms of the Avenger | 1963 | Vannozzo Duchesca (as Giacomo Rossi-Stuart) | Movie |
| Catherine of Russia | 1963 | Count Poniatowski | Movie |
| Gunfight at Red Sands | 1963 | Sheriff Lance Corbett (as G.R. Stuart) (as Giacomo Rossi Stuart) | Movie |
| The Shortest Day | 1963 | Soldato austriaco | Movie |
| Zorro e i tre moschettieri | 1963 | Athos | Movie |
| The Avenger | 1962 | Eurialo | Movie |
| Sodom and Gomorrah | 1962 | Ishmael | Movie |
| Più rosa che giallo | 1962 | Bob Flamer | TV Show |
| Slave of Rome | 1961 | Claudius | Movie |
| 5 Branded Women | 1960 | (as Giacomo Rossi Stuart) | Movie |
| Caltiki, the Immortal Monster | 1959 | Prof. RodrÃguez's Assistant (as G.R. Stuart) | Movie |
| The Night of the Great Attack | 1959 | Count Fabio | Movie |
| Il cavaliere senza terra | 1959 | Ruggero (as Giacomo Rossi-Stuart) | Movie |
| The Day the Sky Exploded | 1958 | Stuart | Movie |
| The Silent Enemy | 1958 | Rosati (as Giacomo Rossi-Stuart) | Movie |
| Il conte di Matera (Il tiranno) | 1958 | Duke Paolo Bressi | Movie |
| A Farewell to Arms | 1957 | Carabiniere | Movie |
| War and Peace | 1956 | Young Cossack | Movie |
| The House of Intrigue | 1956 | Henry | Movie |
| Captain Gallant of the Foreign Legion | 1955 | Sgt. Rousseau / ... (7 episodes, 1956-1957) | TV Show |
| Il mantello rosso | 1955 | | Movie |
