| Je donnerai un million | 1935 | Writer |
| La danza delle lancette | 1936 | Screenplay |
| Bionda sottochiave | 1939 | Screenplay |
| Senza cielo | 1940 | Screenplay |
| Una famiglia impossibile | 1940 | Screenplay |
| San Giovanni decollato | 1940 | Screenplay |
| È caduta una donna | 1941 | Screenplay |
| La scuola dei timidi | 1941 | Screenplay |
| Avanti c'è posto! | 1942 | Screenplay |
| Quarta pagina | 1942 | Screenplay |
| 4 pas dans les nuages | 1942 | Screenplay |
| Il birichino di papà | 1943 | Writer |
| C'è sempre un ma! | 1943 | Screenplay |
| Nos rêves | 1943 | Screenplay |
| Silenzio, si gira! | 1943 | Screenplay |
| Les enfants nous regardent | 1943 | Screenplay |
| La Porte du ciel | 1945 | Screenplay |
| Le Passé qui tue | 1945 | Screenplay |
| Il mondo vuole così | 1946 | Screenplay |
| Le témoin | 1946 | Screenplay |
| Un giorno nella vita | 1946 | Screenplay |
| Sciuscià | 1946 | Screenplay |
| Canto, ma sottovoce... | 1946 | Screenplay |
| Roma città libera | 1946 | Screenplay |
| Cronaca nera | 1947 | Screenplay |
| La grande aurora | 1947 | Writer |
| Il passatore | 1947 | Writer |
| Chasse tragique | 1947 | Screenplay |
| Sperduti nel buio | 1947 | Screenplay |
| Chi è Dio | 1948 | Writer |
| La bête se réveille | 1948 | Screenplay |
| Le Voleur de bicyclette | 1948 | Screenplay |
| Vent'anni | 1949 | Screenplay |
| Au-delà des grilles | 1949 | Screenplay |
| È primavera... | 1950 | Writer |
| Dimanche d'août | 1950 | Screenplay |
| Il cielo è rosso | 1950 | Screenplay |
| Sa Majesté monsieur Dupont | 1950 | Screenplay |
| Miracle à Milan | 1951 | Screenplay |
| Mamma mia, che impressione! | 1951 | Screenplay |
| Umberto D. | 1952 | Screenplay |
| Buongiorno, elefante! | 1952 | Screenplay |
| Roma, ore 11 | 1952 | Screenplay |
| Le Manteau | 1952 | Screenplay |
| 5 poveri in automobile | 1952 | Screenplay |
| La passeggiata | 1953 | Screenplay |
| La Maison du silence | 1953 | Writer |
| Station terminus | 1953 | Screenplay |
| Un marito per Anna Zaccheo | 1953 | Screenplay |
| Nous les femmes | 1953 | Screenplay |
| L'Amour à la ville | 1953 | Producer |
| Amore che si paga | 1953 | Screenplay |
| L'Amour à la ville | 1953 | Writer |
| Femme damnées | 1954 | Screenplay |
| L'Or de Naples | 1954 | Screenplay |
| Ali Baba et les Quarante Voleurs | 1954 | Screenplay |
| Le Signe de Vénus | 1955 | Screenplay |
| Le Toit | 1956 | Screenplay |
| La donna del giorno | 1957 | Screenplay |
| Amore e chiacchiere | 1958 | Screenplay |
| Jeux précoces | 1960 | Screenplay |
| Rat | 1960 | Writer |
| La ciociara | 1960 | Screenplay |
| El joven rebelde | 1961 | Writer |
| Il sicario | 1961 | Screenplay |
| La lunga calza verde | 1961 | Writer |
| Le Jugement dernier | 1961 | Screenplay |
| Le italiane e l'amore | 1961 | Screenplay |
| Boccace 70 | 1962 | Screenplay |
| L'Île des amours interdites | 1962 | Screenplay |
| Les Séquestrés d'Altona | 1962 | Screenplay |
| Il boom | 1963 | Screenplay |
| Hier, aujourd'hui et demain | 1963 | Screenplay |
| Controsesso | 1964 | Screenplay |
| Andremo in città | 1966 | Screenplay |
| Un monde nouveau | 1966 | Writer |
| Le renard s'évade à trois heures | 1966 | Screenplay |
| Les Sorcières | 1967 | Screenplay |
| Sept fois femme | 1967 | Screenplay |
| I sette fratelli Cervi | 1968 | Screenplay |
| Caprice à l'italienne | 1968 | Writer |
| Le Temps des amants | 1968 | Screenplay |
| Les Fleurs du soleil | 1970 | Screenplay |
| Nous l'appellerons André | 1972 | Screenplay |
| Brèves vacances | 1973 | Writer |
| Un cuore semplice | 1977 | Writer |
| The Children of Sanchez | 1978 | Writer |
