| Wadia Movietone | India | 1933 | — | 2 |
| Wakamatsu Production | Japan | — | — | 10 |
| Walden Media | United States | 2000 | — | 36 |
| Wale Adenuga Production | Nigeria | 1978 | — | — |
| Wallimage | Belgium | — | — | 3 |
| Wallis-Hazen Productions | United States | — | — | 1 |
| Wallonie Image Production | Belgium | — | — | 2 |
| Walt Disney Animation Japan | — | 1997 | 2004 | 1 |
| Walt Disney Animation Studios | United States | October 16, 1923 | — | 52 |
| Walt Disney Pictures | United States | 1923 | — | 386 |
| Walt Disney Productions | United States | — | — | 5 |
| Walt Disney Studios | United States | 1923 | — | 1 |
| Walt Disney Studios Home Entertainment | United States | February 13, 1987 | April 14, 2026 | 4 |
| Walt Disney Studios Motion Pictures | United States | 1953 | — | 25 |
| Walt Disney Studios Motion Pictures International | United States | 1961 | — | 5 |
| Walt Disney Studios Sony Pictures Releasing | Russia | 2007 | 2020 | 1 |
| Walt Disney Television | United States | 1983 | 2003 | 10 |
| Walter Lantz Productions | United States | November 16, 1935 | 1984 | 2 |
| Walter Wanger Production | United States | — | — | 10 |
| Walton Studios | United Kingdom | 1899 | 1926 | 88 |
| Wanda Group | People's Republic of China | 1988 | — | 2 |
| Wanda Media | People's Republic of China | 2011 | — | 8 |
| Wanda Visión | Spain | — | — | 7 |
| Wapikoni Mobile | Canada | 2004 | — | 11 |
| Warner Animation Group | — | — | — | 11 |
| Warner Bros. (F.E.) Inc., Taiwan Branch | — | — | — | 5 |
| Warner Bros. Animation | United States | 1980 | — | 90 |
| Warner Bros. Cartoons | United States | November 10, 1926 | October 1969 | 11 |
| Warner Bros. Clockwork | United States | December 18, 2025 | — | — |
| Warner Bros. Discovery | United States | April 8, 2022 | — | 1 |
| Warner Bros. Domestic Television Distribution | United States | January 10, 1972 | — | — |
| Warner Bros. Entertainment | United States | April 4, 1923 | — | 1,298 |
| Warner Bros. Entertainment Italia | Italy | September 2000 | — | 7 |
| Warner Bros. Family Entertainment | — | 1992 | — | 12 |
| Warner Bros. First National | United States | — | — | 1 |
| Warner Bros. France | France | — | — | 1 |
| Warner Bros. Home Entertainment | United States | 2023 | — | 16 |
| Warner Bros. International Television Production | United States | — | — | 1 |
| Warner Bros. International Television Production Netherlands | Netherlands | 2001 | — | 12 |
| Warner Bros. International Television Production New Zealand | — | — | — | — |
| Warner Bros. Japan | Japan | May 29, 1992 | — | 1 |
| Warner Bros. Pictures | United States | November 1969 | — | 39 |
| Warner Bros. Pictures Animation | United States | 2013 | — | 2 |
| Warner Bros. Records | United States | 1958 | May 2019 | 1 |
| Warner Bros. Studios, Leavesden | United Kingdom | 1994 | — | 1 |
| Warner Bros. Television Studios | United States | March 21, 1955 | — | 18 |
| Warner Bros. Television Studios UK | United Kingdom | 1998 | — | — |
| Warner Bros.-Seven Arts | United States | July 15, 1967 | July 8, 1969 | 5 |
| Warner Horizon Unscripted Television | United States | 2006 | — | 1 |
| Warner Independent Pictures | United States | August 2003 | May 8, 2008 | 3 |
| Warner Music Group | United States | April 6, 1958 | — | 4 |
| Warner Music Vision | United States | 1991 | — | 1 |
| Warner Premiere | United States | 2006 | — | 24 |
| Warp Films | United Kingdom | 1999 | — | 10 |
| Warp X | United Kingdom | 2005 | — | 4 |
| Warsaw Documentary Film Studio | Poland | 1950 | — | 24 |
| Warwick Films | United Kingdom | 1951 | 1962 | 23 |
| Warwick Trading Company | United Kingdom | — | — | 1 |
| Washington | United States | November 11, 1889 | — | 1 |
| Washington Square Films | United States | — | — | 1 |
| WATCH IT | Egypt | 2019 | — | — |
| Watch Tower Bible and Tract Society of Pennsylvania | United States | 1884 | — | 1 |
| Watchdoc | Indonesia | 2009 | — | 3 |
| Wati B | France | 2000 | — | 1 |
| Wattpad | Canada | November 2006 | — | 4 |
| Wave Pictures | Denmark | — | — | 1 |
| Wavelength Productions | United States | — | — | 14 |
| Way Creative | Sweden | 2003 | — | — |
| Wayangworks | — | 2011 | — | 1 |
| Waypoint Entertainment | United States | 2010 | — | 1 |
| Ways & Means | United States | 2012 | — | 1 |
| WBEZ | United States | 1943 | — | 1 |
| WBJ Media House | Singapore | 2008 | — | 2 |
| We Made A Thing Studios | Australia | — | — | 1 |
| Weed Road Pictures | United States | 2004 | — | 8 |
| Weekend Blockbusters | India | 2014 | — | 1 |
| Wega Film | Austria | 1980 | — | 14 |
| Wegelius Television | Sweden | 1990 | — | — |
| Weibo Corporation | People's Republic of China | 2010 | — | 1 |
| Weiko Saawa Film | Estonia | 1992 | — | 1 |
| Weintraub Entertainment Group | United States | 1987 | — | 2 |
| WeiT Media | Russia | 2009 | — | 6 |
| Well Go USA Entertainment | United States | April 11, 1994 | — | 1 |
| Wellenreiter.tv | Germany | 1996 | July 2017 | — |
| Welwyn Studios | United Kingdom | — | — | 7 |
| Wendros | Sweden | 1976 | — | — |
| Wenhua Film Company | People's Republic of China | 1946 | 1952 | 6 |
| Werc Werk Works | United States | 2008 | — | 4 |
| Werner Herzog Filmproduktion | Germany | — | — | 18 |
| WerNix Studio | France | April 25, 2024 | — | 1 |
| West Coast Productions | United States | — | — | 1 |
| West Digital Television | Australia | 2010 | — | 1 |
| West Siberian Film Studio | Russia | November 13, 1930 | — | — |
| West Virginia Public Broadcasting | United States | 1969 | — | 1 |
| West World Story | South Korea | — | — | 1 |
| West's Pictures | Australia | — | — | 6 |
| Westdeutscher Rundfunk | Germany | 1956 | — | 31 |
| Western Movie Group | People's Republic of China | — | — | 16 |
| Westinghouse Broadcasting | — | November 2, 1920 | 2000 | 2 |
| WETA-TV | United States | 1961 | — | 2 |
| Weydemann Bros. | Germany | — | — | 2 |
| WFE Production | Belgium | — | — | 1 |
| WG Film | Sweden | July 20, 1995 | — | — |
| WGBH | United States | 1951 | — | — |
| WGBH-TV | United States | May 2, 1955 | — | 2 |
| Wheel Productions | United Kingdom | — | — | 1 |
| Whitaker Entertainment | United States | — | — | 2 |
| White Chestnut Production | France | 2015 | — | 1 |
| White Eagle Enterprises | United States | 1986 | — | — |
| White Fox | Japan | April 2007 | — | 1 |
| White Hill Studios | India | — | — | 1 |
| White Mountain Films | United States | — | — | 1 |
| Whitepoint Digital Oy | Finland | March 22, 2018 | — | 1 |
| Whitewater Films | United States | 2004 | — | 4 |
| Wholeman | Japan | October 1990 | — | — |
| Why Not Productions | France | 1990 | — | 37 |
| Wicked Pictures | United States | 1993 | — | 39 |
| Wiedemann & Berg Television | Germany | 2010 | — | 5 |
| Wien-Film | Austria | 1938 | 1985 | 8 |
| Wiener Kunstfilm | Austria | 1911 | — | 11 |
| Wild Side Films | France | 2002 | — | 1 |
| Wild West Picture Show Productions | United States | 2005 | — | 9 |
| WILDart FILM | Austria | — | — | 1 |
| WildBrain | Canada | 2006 | — | 1 |
| Wildbrain Entertainment | United States | 1994 | 2017 | 1 |
| Wilding Picture Productions | United States | — | — | 2 |
| Wildside | Italy | 2009 | — | 17 |
| WildStorm | United States | 1992 | December 2010 | 1 |
| Wildwood Enterprises | United States | — | — | 2 |
| Wilhelm Fraenger-Institut Berlin gGmbH | Germany | — | — | 1 |
| Will Media | Germany | — | — | — |
| Will Packer Productions | — | — | — | 10 |
| Williams Street | United States | — | — | 3 |
| Willis Kent Productions | United States | — | — | 2 |
| Win's Entertainment | Hong Kong | 1990 | 2009 | 11 |
| Win's Movie Productions | Hong Kong | 1984 | — | 2 |
| Wind Dancer Films | United States | — | — | 1 |
| Windows Production House | India | — | — | 12 |
| Wingman Media | Denmark | — | — | 2 |
| WingNut Films | New Zealand | February 14, 1987 | — | 15 |
| Winkler Production | United States | — | — | 2 |
| Winters/Lucas Productions | United States | — | — | 1 |
| Wintertales | Denmark | December 13, 2017 | — | 1 |
| Wit Studio | Japan | June 2012 | — | 4 |
| Witcraft Szenario | Austria | — | — | 1 |
| Witfilm | Netherlands | — | — | 1 |
| Witt/Thomas Productions | United States | 1973 | 2016 | — |
| Wivefilm | Sweden | 1932 | — | 3 |
| WME Group | United States | 1898 | — | 4 |
| WNET | United States | May 15, 1948 | — | 2 |
| Woestijnvis | Belgium | 1997 | — | 3 |
| Wolf Entertainment | — | 1985 | — | 1 |
| Wolfe Video | — | 1985 | — | 1 |
| Wolper Productions | United States | — | — | 6 |
| Women Make Movies | United States | 1972 | — | 2 |
| Wonderland Sound and Vision | United States | 2001 | — | 17 |
| Woodard Productions | United States | — | — | 1 |
| Woodfall Film Productions | United Kingdom | 1956 | — | 15 |
| Woodline Films | United Kingdom | — | — | 1 |
| Woodpecker Film | Finland | July 2004 | December 31, 2010 | — |
| Wood’s Office | Japan | April 1983 | — | — |
| Woolner Brothers | United States | 1955 | — | 3 |
| Word by Word Limited | Hong Kong | December 10, 2014 | — | 2 |
| Words + Pictures | United States | — | — | 1 |
| Working Class Hero | India | 2018 | — | 3 |
| Working Dog Productions | Australia | 1993 | — | 2 |
| Working Title Films | United Kingdom | 1983 | — | 114 |
| Workpoint Entertainment | Thailand | September 11, 1989 | — | 1 |
| Works Progress Administration | United States | May 6, 1935 | June 30, 1943 | 1 |
| World Biz Journals | Singapore | 2010 | — | 4 |
| World Championship Wrestling | United States | October 11, 1988 | December 16, 2017 | 1 |
| World Council of Arameans | Netherlands | 1983 | — | 1 |
| World Federation of Trade Unions | Greece | October 3, 1945 | — | 1 |
| World Film Company | United States | 1914 | 1919 | 22 |
| World of Wonder | United States | 1991 | — | 5 |
| World Video Bible School | United States | — | — | 1 |
| World Wide Films | United Arab Emirates | 2015 | — | 1 |
| World Wide Motion Pictures Corporation | United States | 1977 | — | — |
| World Wide Pictures | — | 1951 | — | 2 |
| World Wide Pictures | United Kingdom | 1942 | — | — |
| WorldStarHipHop | United States | 2005 | — | 1 |
| Worldview Entertainment | — | 2007 | — | 9 |
| Worldvision Enterprises | United States | 1962 | 1999 | 3 |
| Worldwide Biggies | United States | 2005 | — | 1 |
| Worldwide Pants | United States | 1991 | — | 1 |
| WOWOW | Japan | 1991 | — | 6 |
| Wroclaw Feature Film Studio | Poland | 1954 | — | 4 |
| WTFN | Australia | — | — | 1 |
| Wunderbar Films | — | — | — | 10 |
| Wuzhou Film Distribution | People's Republic of China | — | — | 1 |
| WWE Home Video | United States | April 16, 1997 | — | 1 |
| WWE Studios | United States | 2002 | — | 41 |
| WY Productions | France | July 23, 2002 | — | 1 |
| Wychwood Pictures | United Kingdom | — | — | 1 |
| Wytwórnia Filmów Oswiatowych | Poland | — | — | 6 |
| Wüste Film | Germany | 1989 | — | 13 |
| Wētā FX | New Zealand | 1993 | — | — |