| Caligola |
Italy (original title) |
| Caligula |
Denmark (imdb display title) / Finland / Finland (Swedish title) / France / Hungary (imdb display title) / International (imdb display title) (English title) / Norway (imdb display title) / Portugal (original subtitled version) / UK (imdb display title) / USA |
| Calígula |
Argentina / Brazil / Colombia (imdb display title) / Mexico (imdb display title) / Portugal (imdb display title) / Spain |
| Io, Caligola |
Italy (imdb display title) / Italy (recut version) |
| Kaligula |
Poland / Russia |
| Caligula, My Son |
UK |
| Caligvla |
International (alternative spelling) (English title) |
| Gore Vidal's Caligola |
Italy (working title) |
| Kaligoulas |
Greece (transliterated ISO-LATIN-1 title) |
| Karigyura |
Japan |