| I. L. Caragiale National University of Theatre and Film | — | 1954 | 1 |
| I.Sat | Buenos Aires | 1993 | 1 |
| IB3 | Santa Ponça | March 2005 | 1 |
| ICI Radio-Canada Télé | New Maison de Radio-Canada | September 6, 1952 | 2 |
| ICM Partners | Los Angeles | 1975 | 1 |
| Icon Productions | Los Angeles, California | August 1989 | 33 |
| ICTV | Kyiv | 1992 | 1 |
| Icónica | Madrid | — | 1 |
| Ideal Film Company | London | 1911 | 62 |
| Ideas del Sur | — | October 28, 1996 | — |
| Ideosource Entertainment | — | 2011 | 5 |
| IDN Pictures | West Jakarta | — | 5 |
| IFC Films | New York City | 1999 | 10 |
| IFI Sinema | — | — | 4 |
| Ignite Entertainment | Los Angeles | 1998 | — |
| Igra TV | Soviet Union, Russia | 1990 | — |
| IHQ | Samseong-dong | February 1999 | 47 |
| Ikoon | — | 2001 | 1 |
| Illume | Länsi-Pasila | 1987 | 6 |
| Illusion Studios | Buenos Aires | 2001 | 3 |
| IM Global | Los Angeles | 2007 | 24 |
| Image Entertainment | Los Angeles | 1981 | 3 |
| Image Nation | — | 2008 | 13 |
| Image Ten | — | — | 1 |
| ImageMovers | Novato | 1997 | 12 |
| Images de la Diversité | — | — | 1 |
| Imagine Entertainment | Beverly Hills | November 1985 | 90 |
| Impala | — | — | 8 |
| Impala Studios | — | — | 1 |
| Imprint Entertainment | Burbank | 2008 | 2 |
| Improvision | Coventry | 1990 | 1 |
| Incite Pictures | New York City | — | — |
| Independent Artist Management | Hua Mak | January 18, 2017 | 2 |
| Independent Short Film | — | — | 1 |
| Indiana Production | Milan | 2005 | 14 |
| IndieMan Productions | San Diego | 2012 | 3 |
| INDIESTORY | Seoul | 1998 | 55 |
| Indigo Film | Rome | 1994 | 20 |
| Industrial Light & Magic | San Francisco, Letterman Digital Arts Center | May 1975 | — |
| Infinitum Nihil | Los Angeles | 2004 | 7 |
| Inforg Stúdió | — | — | 2 |
| InformAction | Montreal | 1971 | 8 |
| Ingenious Media | London | 1998 | 45 |
| Inkas Film Production | Athens | 1997 | 3 |
| InlayFilm | Moscow | 2007 | 1 |
| Insignia Films | New York City | 1988 | 3 |
| Inspiration Pictures | — | — | 1 |
| Institut del Cinema Català | Barcelona | 1975 | 3 |
| Institut français | Paris | 2011 | 1 |
| Institut national de l'audiovisuel | Bry-sur-Marne | January 6, 1975 | 7 |
| Institute for Regional Education | Santa Fe | April 3, 1973 | 2 |
| Instituto do Cinema e do Audiovisual | — | 1971 | 5 |
| Instituto Valencià de Cinematografia Ricardo Muñoz Suay | — | — | 1 |
| Intelligent Creatures | Toronto | 2003 | 1 |
| Interfilm Production Studio | Kyiv | February 16, 2001 | 1 |
| Interloper Films | — | 1994 | 1 |
| Internacional Films | Carrer de València | 1920 | — |
| International Film Service | — | — | 4 |
| International Film Service | — | 1915 | 1 |
| International Germania Film | — | — | 2 |
| Interopa Film | Berlin | 1959 | — |
| Intrepid Pictures | Santa Monica, Los Angeles | 2004 | 12 |
| Intuitive Pictures | — | — | 1 |
| Ipotesi Cinema | — | 1982 | 1 |
| IPR.VC | Helsinki | December 22, 2014 | 1 |
| Ipso Facto Films | Newcastle upon Tyne | — | 1 |
| Iran Ecran | — | — | 1 |
| Iran Nema Studio | — | 1958 | 2 |
| IRIB TV2 | Tehran | 1979 | 1 |
| Iris Productions | — | — | 5 |
| Irontree Films | San Diego | — | 1 |
| Ishimori Productions | Tokyo | 1967 | 14 |
| ISL Film | Budapest | — | 2 |
| Isle of Man | — | May 10, 1765 | 1 |
| Israel Film Fund | — | 1979 | 2 |
| Israel Film Service | Jerusalem | 1956 | — |
| Istituto Luce | Rome | 1924 | 21 |
| It's Alive Films | Hermanninmäki | 2013 | 4 |
| Itala Film | Turin | 1907 | 53 |
| Itala-Film | Berlin | — | — |
| ItalFrance films | Paris | — | 1 |
| Italy | — | June 18, 1946 | 1 |
| ITN | 200 Gray's Inn Road | 1955 | 2 |
| ITV Anglia | Norwich | 1959 | — |
| ITV Central | Birmingham | 1982 | 2 |
| ITV Granada | MediaCityUK | May 3, 1956 | 4 |
| ITV Studios Germany | Cologne | 1999 | — |
| ITV Yorkshire | Leeds | 1968 | 1 |
| ITVS | San Francisco | — | 8 |
| Ivi.ru | Moscow | February 26, 2010 | 1 |
| IWantTFC | — | 2011 | — |
| IWC Media | Glasgow | 2004 | — |
| Iyuno Germany | Lankwitz | October 14, 1949 | — |
| İctimai Television | Baku | 2005 | 1 |
| Île-de-France | — | June 4, 1960 | 1 |