| John Sutherland Productions | — | 1945 | 1991 | 1 |
| Johnny Mak Production Ltd | People's Republic of China | — | — | 1 |
| Joseph M. Schenck Productions | United States | — | — | 1 |
| Journal-Film Klaus Volkenborn | Germany | — | — | 1 |
| Jules Jordan Productions | United States | — | — | 1 |
| Julian Blaustein productions | United States | — | — | 1 |
| Just Vision | United States | 2003 | — | 1 |
| K-Films Amerique | Canada | — | — | 1 |
| K-Star | France | — | — | 1 |
| K/O Paper Products | — | 2005 | — | 1 |
| K2 Productions | Belgium | — | — | 1 |
| Kadokawa Corporation | Japan | 2014 | — | 1 |
| Kadokawa Haruki Corporation | Japan | September 12, 1995 | — | 1 |
| Kaleidoskop Films | Faroe Islands | — | — | 1 |
| Kalejdoskop Film Studio | Poland | 1988 | — | 1 |
| Kamerafirma The Camera House Oy | Finland | November 16, 2016 | October 31, 2021 | 1 |
| Kan 11 | Israel | May 15, 2017 | — | 1 |
| Kanbar Entertainment | United States | 2002 | — | 1 |
| Kandor Graphics | Spain | 1992 | — | 1 |
| Kanif - Productions tous terrains | Canada | — | — | 1 |
| Kantana Group | Thailand | 1951 | — | 1 |
| Kaplan Film Production | Turkey | — | — | 1 |
| Kargin Studio | — | August 9, 2004 | December 6, 2019 | 1 |
| Kartulid ja apelsinid | Estonia | — | — | 1 |
| Kasander & Wigman Productions | Kingdom of the Netherlands | — | — | 1 |
| Katalyst Films | United States | — | — | 1 |
| Katalyst Media | United States | 2000 | — | 1 |
| Katapult Film | Hungary | — | — | 1 |
| Kay-Bee Pictures | United States | 1912 | — | 1 |
| Kazka Production | Ukraine | — | — | 1 |
| KC Medien | Germany | — | — | 1 |
| KDDI | Japan | 1984 | — | 1 |
| Kemna & Zonen | Netherlands | — | — | 1 |
| Kendrick Brothers | — | — | — | 1 |
| Kenner Products | United States | 1946 | 2000 | 1 |
| Keshet | Israel | 1993 | — | 1 |
| Ketchup Entertainment | — | 2011 | — | 1 |
| KFS Production | — | — | — | 1 |
| Kids' WB | — | September 9, 1995 | — | 1 |
| Kiev Square Group | — | 1992 | — | 1 |
| Kigali Films | United Kingdom | — | — | 1 |
| Kimco | United States | — | — | 1 |
| Kinema | Yugoslavia | 1946 | — | 1 |
| Kinema Junpo | Japan | August 19, 1923 | — | 1 |
| King World Productions | United States | 1964 | 2007 | 1 |
| Kings Road Entertainment | United States | — | — | 1 |
| Kino Lorber | — | 1977 | — | 1 |
| Kino Montreal | Canada | 2001 | — | 1 |
| Kino Świat | Poland | 2001 | — | 1 |
| Kinocompany | Finland | — | — | 1 |
| Kinografen | Denmark | 1906 | 1920 | 1 |
| Kinology | France | 2008 | — | 1 |
| Kinopoisk | Russia | November 7, 2003 | — | 1 |
| Kinorob | — | 2014 | — | 1 |
| Kinos Rentals | Finland | July 30, 2015 | — | 1 |
| Kinoteka | Croatia | 2009 | — | 1 |
| Kintop Pictures | United States | — | — | 1 |
| KION | Russia | — | — | 1 |
| Kish Free Zone | Iran | 1989 | — | 1 |
| Kitano Agency | Japan | 2021 | — | 1 |
| Kjeruben | Norway | — | — | 1 |
| Klikk Productions | Iceland | — | — | 1 |
| Klubb Super 8 | Sweden | March 29, 2007 | — | 1 |
| KNM | Monaco | — | — | 1 |
| Knowledge Network | Canada | January 12, 1981 | — | 1 |
| KnowWonder | United States | 1996 | — | 1 |
| Koliba Film | Turkey | — | — | 1 |
| KOMPAN | West Germany | 1989 | — | 1 |
| Kompas Gramedia Group | Indonesia | June 28, 1965 | — | 1 |
| Komuna | Serbia | — | — | 1 |
| Kong Ngee Motion Picture Production Company | British Hong Kong | 1955 | 1968 | 1 |
| Konstantin Märska Filmproduktsioon | Estonia | — | — | 1 |
| Koohi-Noor Film | Pahlavi Iran | — | — | 1 |
| Kopelson Entertainment | United States | — | — | 1 |
| Koppfilm Productions | Germany | — | — | 1 |
| Korean Arts Movie Studio | North Korea | — | — | 1 |
| Korean Broadcasting System | South Korea | March 3, 1973 | — | 1 |
| Kosovafilm | Kosovo | 1969 | — | 1 |
| Koulev Film | Bulgaria | — | — | 1 |
| Kowloon Development | — | 1961 | — | 1 |
| KQED | United States | June 1953 | — | 1 |
| Kraków | Poland | — | — | 1 |
| KRCG | South Korea | — | — | 1 |
| Kritanjoli Films | Bangladesh | — | — | 1 |
| Kroyer Films | — | 1986 | 1994 | 1 |
| Krup Productions | India | — | — | 1 |
| KT Corporation | South Korea | 1981 | — | 1 |
| KTK | Kazakhstan | February 1991 | — | 1 |
| Kulturtuben | Sweden | 1985 | — | 1 |
| Kultusfilm | Estonia | — | — | 1 |
| Kurdistan | Syria | — | — | 1 |
| Kurhaus production | Germany | — | — | 1 |
| Köggull Filmworks | Iceland | — | — | 1 |
| La 2 | Spain | November 15, 1966 | — | 1 |
| La Générale de Production | France | January 24, 2001 | — | 1 |
| La Iguana | Spain | — | — | 1 |
| La Manchester | Spain | July 27, 2015 | — | 1 |
| La Melissa Films | Italy | — | — | 1 |
| La Onda productions | France | 2015 | — | 1 |
| LA Productions | — | 2000 | — | 1 |