| Il vagabondo | 1941 | Screenplay |
| L'innocente Casimiro | 1945 | Screenplay |
| The Rape of the Sabine | 1945 | Screenplay |
| How I Lost the War | 1947 | Screenplay |
| L'eroe della strada | 1948 | Screenplay |
| Come scopersi l'America | 1949 | Writer |
| La bisarca | 1950 | Writer |
| Beauties on bicycles | 1951 | Screenplay |
| Milano miliardaria | 1951 | Screenplay |
| La paura fa 90 | 1951 | Screenplay |
| Beauties in Capri | 1951 | Screenplay |
| Una bruna indiavolata! | 1951 | Screenplay |
| La famiglia Passaguai | 1951 | Screenplay |
| La famiglia Passaguai fa fortuna | 1952 | Screenplay |
| The Dream of Zorro | 1952 | Screenplay |
| Il tallone di Achille | 1952 | Writer |
| Dad Becomes Mom | 1952 | Screenplay |
| I, Hamlet | 1952 | Screenplay |
| È arrivato l'accordatore | 1952 | Screenplay |
| The Lucky Five | 1952 | Screenplay |
| Fermi tutti... arrivo io! | 1953 | Screenplay |
| Finalmente libero | 1953 | Writer |
| La campana di San Giusto | 1954 | Writer |
| Shack and puppets | 1954 | Screenplay |
| Bertoldo, Bertoldino and Cacasenno | 1954 | Writer |
| I due compari | 1955 | Screenplay |
| Porta un bacione a Firenze | 1955 | Screenplay |
| Totò, Peppino e i fuorilegge | 1956 | Screenplay |
| Pirate of the Half Moon | 1957 | Screenplay |
| I dritti | 1957 | Writer |
| Serenatella Sciuè Sciuè | 1958 | Screenplay |
| I prepotenti | 1958 | Screenplay |
| The Third | 1958 | Screenplay |
| L'amore nasce a Roma | 1958 | Writer |
| Prepotenti più di prima | 1959 | Screenplay |
| Simpatico mascalzone | 1959 | Writer |
| The Sheriff | 1959 | Screenplay |
| Terror of Oklahoma | 1959 | Writer |
| Caravan Petrol | 1959 | Screenplay |
| A qualcuna piace calvo | 1959 | Writer |
| A Soldier and a Half | 1960 | Screenplay |
| La banda del buco | 1960 | Screenplay |
| Cacciatori di dote | 1961 | Screenplay |
| Canzoni a tempo di Twist | 1962 | Writer |
| Beauties on Motor Scooters | 1962 | Screenplay |
| Vino, whisky e acqua salata | 1962 | Writer |
| Urlo contro melodia nel Cantagiro 1963 | 1963 | Writer |
| The Black Duke | 1963 | Screenplay |
| Maskenball bei Scotland Yard | 1963 | Screenplay |
| Arms of the Avenger | 1963 | Screenplay |
| I 4 tassisti | 1963 | Screenplay |
| 2 mattacchioni al Moulin Rouge | 1964 | Screenplay |
| Sword of Damascus | 1964 | Writer |
| Songs, Bullies and Chicks | 1964 | Screenplay |
| The Two Gladiators | 1964 | Writer |
| The Terror of Rome Against the Son of Hercules | 1964 | Screenplay |
| I ragazzi dell'Hully Gully | 1964 | Screenplay |
| Soldiers and corporals | 1964 | Screenplay |
| Viaggio di nozze all'italiana | 1966 | Screenplay |
| Kill or Be Killed | 1966 | Screenplay |
| Trap for Seven Spies | 1966 | Screenplay |
| Riderà! - Cuore matto | 1967 | Screenplay |
| Tutto Totò - Totò Ye Ye | 1967 | Writer |
| Tutto Totò - Totò a Napoli | 1967 | Writer |
| Addio, mamma! | 1967 | Writer |
| Sailors on Deck | 1967 | Screenplay |
| Cuore matto... matto da legare | 1967 | Writer |
| Days of Violence | 1967 | Screenplay |
| Hate for Hate | 1967 | Writer |
| Killer Adios | 1968 | Screenplay |
| Night of Hate | 1968 | Screenplay |
| Three Supermen in Tokyo | 1968 | Screenplay |
| Man Only Cries for Love | 1968 | Writer |
| I Protect Myself Against My Enemies | 1968 | Screenplay |
| Shoot, Gringo... Shoot! | 1968 | Screenplay |
| The Great Silence | 1968 | Screenplay |
| Vacation on the Esmeralda Coast | 1968 | Writer |
| Song That's Playing In My Head (Zum Zum Zum) | 1969 | Screenplay |
| Isabella, Duchess of the Devils | 1969 | Writer |
| Il Terribile Ispettore | 1969 | Screenplay |
| Franco, Ciccio and the Pirate Blackbeard | 1969 | Screenplay |
| Zum Zum Zum 2 | 1969 | Writer |
| Pensiero d'amore | 1969 | Screenplay |
| Three Supermen in the Jungle | 1970 | Screenplay |
| On the Day of the Lord | 1970 | Screenplay |
| Tears of Love | 1970 | Screenplay |
| Lady Barbara | 1970 | Writer |
| Lady Barbara | 1970 | Screenplay |
| Two Whites in Dark Africa | 1970 | Screenplay |
| Amore formula 2 | 1970 | Screenplay |
| The Story of Romance and Knife | 1971 | Screenplay |
| Panhandle 38 | 1972 | Writer |
| The Forbidden Decameron | 1972 | Writer |
| Nights of Boccaccio | 1972 | Writer |
| Sonny and Jed | 1972 | Screenplay |
| Story of Fear and a Knife | 1972 | Screenplay |
| Le mille e una notte all'italiana | 1972 | Screenplay |
| Poppea: A Prostitute in Service of the Emperor | 1972 | Screenplay |
| The Mighty Anselmo and His Squire | 1972 | Screenplay |
| The Funny Face of the Godfather | 1973 | Writer |
| Storia de fratelli e de cortelli | 1973 | Writer |
| Battle of the Amazons | 1973 | Writer |
| Helen, Yes... Helen of Troy | 1973 | Writer |
| 4 Crazy Draftees at the Army | 1974 | Writer |
| Pasqualino Cammarata... capitano di fregata | 1974 | Screenplay |
| Trouble in Istamboel | 1974 | Writer |
| Il trafficone | 1974 | Writer |
| Shoot First… Ask Questions Later | 1975 | Screenplay |
| The Noon Vigilante | 1975 | Screenplay |
| Il cav. Costante Nicosia demoniaco, ovvero Dracula in Brianza | 1975 | Screenplay |
| Di che segno sei? | 1975 | Writer |
| Africa Express | 1975 | Screenplay |
| Safari Express | 1976 | Writer |
| The Cop in Blue Jeans | 1976 | Screenplay |
| Hit Squad | 1976 | Screenplay |
| Messalina, Messalina! | 1977 | Screenplay |
| Three Tigers Against Three Tigers | 1977 | Screenplay |
| The Swindle | 1977 | Screenplay |
| The Son of the Sheik | 1978 | Screenplay |
| Little Italy | 1978 | Screenplay |
| Odds and Evens | 1978 | Screenplay |
| The Gang That Sold America | 1979 | Screenplay |
| Assassination on the Tiber | 1979 | Screenplay |
| Agenzia Riccardo Finzi... praticamente detective | 1979 | Screenplay |
| Crime at Porta Romana | 1980 | Screenplay |
| I'm Getting a Yacht | 1980 | Screenplay |
| Uno contro l'altro, praticamente amici | 1981 | Screenplay |
| Crime at the Chinese Restaurant | 1981 | Screenplay |
| Who Finds a Friend Finds a Treasure | 1981 | Screenplay |
| The Haunted House | 1982 | Screenplay |
| Banana Joe | 1982 | Screenplay |
| Crime on the Highway | 1982 | Screenplay |
| Thieves and Robbers | 1983 | Screenplay |
| The Devil and Holy Water | 1983 | Screenplay |
| Occhio, malocchio, prezzemolo e finocchio | 1983 | Screenplay |
| Crime in Formula One | 1984 | Screenplay |
| Dance Music | 1984 | Writer |
| Cop in Drag | 1984 | Screenplay |
| Aladdin | 1986 | Screenplay |
| Rimini Rimini | 1987 | Screenplay |
| Stuff for the Rich | 1987 | Screenplay |
| Rimini, Rimini: A Year Later | 1988 | Screenplay |
