| Odessa Filmworks | Ottawa | — | 1 |
| Okko | Sankt-Peterburg | 2011 | 1 |
| Okko Production | Praha | — | 1 |
| Ombetja Yehinga Organisation | Windhoek-Prosperita | 2001 | 1 |
| Omnia Film | Munich | — | 1 |
| Omroep MAX | Hilversum | 2002 | 1 |
| One Astor Plaza | — | 1972 | 1 |
| ONE Championship | Kallang | 14 Juli 2011 | 1 |
| Open de España | — | 1912 | 1 |
| Optimystix Entertainment | Mumbai | 2000 | 1 |
| Orang Het | — | 1700 SM | 1 |
| Orange Cinéma Séries | Paris | 13 November 2008 | 1 |
| Orange S.A. | Issy-les-Moulineaux | 1988 | 1 |
| Orange Studio | Issy-les-Moulineaux | 22 Oktober 2001 | 1 |
| Oriental Film | Batavia | 1940 | 1 |
| Orisono | Luzern | 2020 | 1 |
| Orlando Film Festival | — | 2005 | 1 |
| Orona/Stevens | — | — | 1 |
| Otomatic | — | — | 1 |
| Ouille Productions | Neuilly-sur-Seine | 1996 | 1 |
| Outre-Mer 1ère | Malakoff | 14 September 1954 | 1 |
| Outside Films | — | — | 1 |
| Outspoken Media | Kota New York | 2004 | 1 |
| Oxford Films | — | — | 1 |
| OXYBOT | — | Desember 2004 | 1 |
| P.K. 12 Film | — | 1950 | 1 |
| P4 Theater | Beijing | 4 Juni 2016 | 1 |
| Pacific Films | Wellington | — | 1 |
| Pacific Research Institute | Pasadena | 1979 | 1 |
| Pacific Street Films | Brooklyn | 1969 | 1 |
| Pagot Film | Milan | 1938 | 1 |
| Paladin Production | Paris | — | 1 |
| Palari Films | Mampang Prapatan | 2017 | 1 |
| Palimpsesto | — | — | 1 |
| Pandora Filmes | — | 1989 | 1 |
| Panenka | Antwerpen | 31 Juli 2014 | 1 |
| Panic Movement | — | 1962 | 1 |
| Panorama Film Studios | — | — | 1 |
| Pantera Film | Berlin | — | 1 |
| Papillon Films | A Coruña | Juni 2001 | 1 |
| Paradox Rettigheter | Lillehammer | 24 Agustus 1998 | 1 |
| Parallel Universe | — | Juni 2012 | 1 |
| Paramount Networks Americas | Miami Beach | 1993 | 1 |
| Parco Film | — | — | 1 |
| Parnasse International | — | — | 1 |
| PBOUL Borisevich R.U | — | — | 1 |
| Pen N Camera International | Mumbai | 1977 | 1 |
| Penguin Productions | — | — | 1 |