| K&S Films | — | 2005 | — | 8 |
| K-Films Amerique | Canada | — | — | 1 |
| K-Star | France | — | — | 1 |
| K. Sera Sera | — | — | — | 4 |
| K/O Paper Products | — | 2005 | — | 1 |
| K2 Productions | Belgium | — | — | 1 |
| Kaap Holland Film | Netherlands | 2015 | — | 20 |
| Kadokawa Corporation | Japan | 2014 | — | 1 |
| Kadokawa Daiei Studio | Japan | April 2013 | — | 3 |
| Kadokawa Haruki Corporation | Japan | September 12, 1995 | — | 1 |
| Kadokawa Key-Process | Japan | 1954 | — | 3 |
| Kadokawa Pictures | Japan | 2007 | 2011 | 38 |
| Kadokawa Shoten | Japan | November 10, 1945 | — | 7 |
| Kaissar Film | Germany | 2008 | — | 2 |
| Kaleidoscope Entertainment | — | 1989 | — | 2 |
| Kaleidoskop Films | Faroe Islands | — | — | 1 |
| Kalejdoskop Film Studio | Poland | 1988 | — | 1 |
| Kalem Company | United States | 1907 | 1917 | 30 |
| Kalyana Shira Films | Indonesia | — | — | 2 |
| Kamakshi Movies | India | 1987 | — | 5 |
| Kamerafilm | Norway | — | — | 2 |
| Kamerafirma The Camera House Oy | Finland | November 16, 2016 | October 31, 2021 | 1 |
| Kamra Film | Pahlavi Iran | — | — | 3 |
| Kan 11 | Israel | May 15, 2017 | — | 1 |
| Kanal 1 Drama | — | 1987 | 1995 | 4 |
| KanalB | Germany | 2000 | — | — |
| Kanbar Entertainment | United States | 2002 | — | 1 |
| Kandor Graphics | Spain | 1992 | — | 1 |
| Kanif - Productions tous terrains | Canada | — | — | 1 |
| Kanoon-E Sinamagran-E Pishro | Pahlavi Iran | — | — | 4 |
| Kantana Group | Thailand | 1951 | — | 1 |
| Kanteerava Studios | India | 1966 | — | 6 |
| KAOS | Germany | — | — | — |
| Kaos Films | United Kingdom | 2001 | — | — |
| Kapital Entertainment | United States | 2009 | — | — |
| Kaplan Film Production | Turkey | — | — | 1 |
| Karagiannis-Karatzopoulos | — | 1966 | — | 32 |
| Kargin Studio | — | August 9, 2004 | December 6, 2019 | 1 |
| Kartemquin Films | United States | — | — | 3 |
| Kartulid ja apelsinid | Estonia | — | — | 1 |
| Karé Productions | France | January 29, 1996 | — | 12 |
| Kasander & Wigman Productions | Kingdom of the Netherlands | — | — | 1 |
| Kaspien Holdings, Inc. | — | December 1972 | — | 2 |
| Kassikuld | Estonia | — | — | 3 |
| Katalyst Films | United States | — | — | 1 |
| Katalyst Media | United States | 2000 | — | 1 |
| Kataoka Chiezo Productions | Japan | May 10, 1928 | — | — |
| Katapult Film | Hungary | — | — | 1 |
| Katharina | France | — | — | 2 |
| Kavac Film | Italy | — | — | 2 |
| Kavithalayaa Productions | — | 1981 | — | 35 |
| Kay-Bee Pictures | United States | 1912 | — | 1 |
| Kazak Productions | France | July 6, 2007 | — | 6 |
| Kazakhfilm | Kazakhstan | 1934 | — | 66 |
| Kazhcha Chalachithra Vedi | India | 2001 | — | — |
| Kazka Production | Ukraine | — | — | 1 |
| KBS Media | South Korea | 1991 | — | — |
| KC Medien | Germany | — | — | 1 |
| KD Studios | Russia | 2012 | — | 3 |
| KDDI | Japan | 1984 | — | 1 |
| Kediripedia.com | Indonesia | 2015 | — | 3 |
| Kell Kümme | Estonia | 2003 | — | — |
| Kemna & Zonen | Netherlands | — | — | 1 |
| Kendrick Brothers | — | — | — | 1 |
| Kennedy Miller Mitchell | — | 1978 | — | 14 |
| Kenner Products | United States | 1946 | 2000 | 1 |
| Keshet | Israel | 1993 | — | 1 |
| Ketchup Entertainment | — | 2011 | — | 1 |
| KeyEast | South Korea | 1996 | — | 3 |
| KeyFilm | Netherlands | 2008 | — | 6 |
| Keystone Studios | United States | 1912 | December 31, 1935 | 7 |
| KFS Production | — | — | — | 1 |
| KG Productions | France | — | — | 3 |
| Khalabo Ink Society | United States | 2020 | — | 2 |
| Khanzhonkov Company | Russian Empire | 1906 | 1920 | 28 |
| Khara | Japan | May 17, 2006 | — | 5 |
| Kidari Studio | South Korea | — | — | — |
| Kids' WB | — | September 9, 1995 | — | 1 |
| Kiev Square Group | — | 1992 | — | 1 |
| Kievnauchfilm | Soviet Union | 1941 | 1993 | 14 |
| Kigali Films | United Kingdom | — | — | 1 |
| Killer Films | — | 1995 | — | 78 |
| Killer Minnow | United States | 2008 | — | — |
| Kim Jong-hak Production | South Korea | February 1999 | — | — |
| Kim Ki-duk Film | South Korea | 2001 | — | 17 |
| Kimco | United States | — | — | 1 |
| Kindai Eiga Kyokai | Japan | July 31, 1950 | — | 8 |
| Kinderfilm | Germany | 2000 | — | — |
| Kindle Entertainment | — | 2007 | — | 3 |
| Kinema | Yugoslavia | 1946 | — | 1 |
| Kinema Citrus | Japan | March 3, 2008 | — | 2 |
| Kinema Junpo | Japan | August 19, 1923 | — | 1 |
| Kinescope Film | Germany | — | — | 2 |
| King Brothers Productions | — | 1941 | 1960 | 16 |
| King Features Syndicate | United States | 1915 | — | 9 |
| King Records | Japan | 1931 | — | 3 |
| King World Productions | United States | 1964 | 2007 | 1 |
| Kingdom Story Company | United States | 2019 | — | 7 |
| Kings Road Entertainment | United States | — | — | 1 |
| Kino Films | Japan | April 2011 | — | — |
| Kino Lorber | — | 1977 | — | 1 |
| Kino Montreal | Canada | 2001 | — | 1 |
| Kino Świat | Poland | 2001 | — | 1 |
| Kino-Eye Films | Bangladesh | 1984 | — | 4 |
| Kino-Recla | Finland | 1925 | May 2, 1931 | — |
| KinoAtis | Russia | June 23, 2004 | — | 2 |
| Kinocompany | Finland | — | — | 1 |
| Kinografen | Denmark | 1906 | 1920 | 1 |
| Kinokompanii︠a︡ "Andreevskiĭ flag" | Russia | 2003 | — | 4 |
| Kinology | France | 2008 | — | 1 |
| Kinopoisk | Russia | November 7, 2003 | — | 1 |
| Kinoproduction | Finland | 1977 | — | 11 |
| Kinorob | — | 2014 | — | 1 |
| Kinos Rentals | Finland | July 30, 2015 | — | 1 |
| Kinosaurus Film | Estonia | January 10, 2011 | — | 2 |
| Kinoshita Group | Japan | December 15, 1987 | — | 2 |
| Kinosto | Finland | February 18, 2005 | — | 4 |
| Kinotaurus | Finland | — | — | 2 |
| Kinoteka | Croatia | 2009 | — | 1 |
| Kintop Pictures | United States | — | — | 1 |
| KION | Russia | — | — | 1 |
| Kirch Group | — | 1955 | 2002 | 2 |
| Kish Free Zone | Iran | 1989 | — | 1 |
| Kisi Production | Iceland | February 22, 2011 | — | 2 |
| Kissfilms | France | — | — | 2 |
| Kitano Agency | Japan | 2021 | — | 1 |
| Kitty Films | Japan | 1972 | 1996 | 5 |
| Kjeruben | Norway | — | — | 1 |
| Klaffi Productions | Finland | 1996 | — | — |
| Klappboxfilme | Germany | 2006 | — | — |
| Klas Film | Bulgaria | — | — | 2 |
| Klasky Csupo | United States | 1982 | — | 4 |
| Klaw & Erlanger | United States | 1888 | 1919 | — |
| Klever Pictures | United States | 1916 | 1919 | — |
| KlikFilm Productions | Indonesia | 2021 | — | 4 |
| Klikk Productions | Iceland | — | — | 1 |
| Klockworx | Japan | January 24, 1997 | — | 2 |
| Klubb Super 8 | Sweden | March 29, 2007 | — | 1 |
| KM Production | France | 1994 | — | — |
| Kmax | Japan | May 1991 | — | — |
| KNIFE! Films | Ukraine | — | — | 2 |
| Knight Enterprises | Canada | — | — | — |
| KNM | Monaco | — | — | 1 |
| Knowledge Network | Canada | January 12, 1981 | — | 1 |
| KnowWonder | United States | 1996 | — | 1 |
| Kodansha | Japan | November 1909 | — | 2 |
| Kohinoor Film Company | India | 1918 | — | 3 |
| Kokers Films | — | 1985 | — | 11 |
| Kokuei | Japan | August 22, 1958 | — | 16 |
| Kokusai Katsuei | Japan | December 6, 1919 | — | — |
| Koliba Film | Turkey | — | — | 1 |
| Komeetta | Finland | — | — | 2 |
| Kommunenes Filmcentral | Norway | 1919 | — | 8 |
| KOMPAN | West Germany | 1989 | — | 1 |
| Kompas Gramedia Group | Indonesia | June 28, 1965 | — | 1 |
| Komplizen Film | Germany | — | — | 4 |
| Komuna | Serbia | — | — | 1 |
| Konami | Japan | March 21, 1969 | — | 3 |
| Kong Ngee Motion Picture Production Company | British Hong Kong | 1955 | 1968 | 1 |
| Konrad Wolf Film University of Babelsberg | Germany | 1954 | — | 4 |
| Konstantin Märska Filmproduktsioon | Estonia | — | — | 1 |
| Koohi-Noor Film | Pahlavi Iran | — | — | 1 |
| Kopelson Entertainment | United States | — | — | 1 |
| Kopli Kinokompanii | Estonia | 2006 | — | 5 |
| Koppfilm Productions | Germany | — | — | 1 |
| Kordes & Kordes Film | Germany | 2003 | — | 2 |
| Korean Academy of Film Arts | South Korea | 1984 | — | 45 |
| Korean Arts Movie Studio | North Korea | — | — | 1 |
| Korean Broadcasting System | South Korea | March 3, 1973 | — | 1 |
| Kosovafilm | Kosovo | 1969 | — | 1 |
| Koulev Film | Bulgaria | — | — | 1 |
| Kourtrajmé | France | August 7, 2003 | — | — |
| Kowalski Films | Spain | — | — | 17 |
| Kowloon Development | — | 1961 | — | 1 |
| Košutnjak film (Firm) | — | 2005 | — | — |
| KQED | United States | June 1953 | — | 1 |
| Kraków | Poland | — | — | 1 |
| KRCG | South Korea | — | — | 1 |
| Kriim | Estonia | — | — | 2 |
| Kritanjoli Films | Bangladesh | — | — | 1 |
| KRO-NCRV | Netherlands | 2014 | — | 2 |
| Kross Pictures | South Korea | — | — | 2 |
| Kroyer Films | — | 1986 | 1994 | 1 |
| KRU Studios | Malaysia | 1992 | — | 4 |
| Krup Productions | India | — | — | 1 |
| Krátký Film Praha | Czech Republic | 1957 | — | 6 |
| KS Pictures | — | 2015 | — | — |
| KSS | Japan | — | — | 2 |
| KT Corporation | South Korea | 1981 | — | 1 |
| KT Studio Genie | South Korea | 2021 | — | — |
| KTK | Kazakhstan | February 1991 | — | 1 |
| Kudos | United Kingdom | 1992 | — | 6 |
| Kulturtuben | Sweden | 1985 | — | 1 |
| Kultusfilm | Estonia | — | — | 1 |
| Kunlun Film Company | People's Republic of China | — | — | 3 |
| Kurdistan | Syria | — | — | 1 |
| Kurhaus production | Germany | — | — | 1 |
| Kurt Ulrich Film | Germany | — | — | 2 |
| Kuukulgur Film | Estonia | 2003 | — | 13 |
| Kvartal 95 | Ukraine | 2003 | — | 8 |
| Kwassa Films | Belgium | — | — | 4 |
| KykNET | South Africa | October 1999 | — | 2 |
| Kyoto Animation | Japan | 1981 | — | 6 |
| Kyrgyzfilm | Kyrgyzstan | 1942 | — | 19 |
| Köggull Filmworks | Iceland | — | — | 1 |