| Wadia Movietone | — | 1933 | 2 |
| Walden Media | Los Angeles | 2000 | 36 |
 Wale Adenuga Production | Lagos | 1978 | — |
| Wallimage | — | — | 3 |
| Walt Disney Animation Japan | Bay Lake | 1997 | 1 |
| Walt Disney Studios Sony Pictures Releasing | Moscow | 2007 | 1 |
 Walter Lantz Productions | Universal City | 16 November 1935 | 2 |
| Walter Wanger Production | — | — | 10 |
 Wanda Group | Beijing | 1988 | 2 |
 Wanda Media | Beijing | 2011 | 8 |
| WankzVR | — | — | 3 |
 Warner Animation Group | Burbank | — | 11 |
| Warner Bros. (F.E.) Inc., Taiwan Branch | — | — | 5 |
 Warner Bros. Animation | Sherman Oaks, Burbank | 1980 | 90 |
| Warner Bros. Clockwork | Burbank | 18 December 2025 | — |
 Warner Bros. Discovery | New York City | 8 April 2022 | 1 |
 Warner Bros. Domestic Television Distribution | Burbank | 10 January 1972 | — |
 Warner Bros. Entertainment Italia | Rome | September 2000 | 7 |
| Warner Bros. Family Entertainment | Burbank | 1992 | 12 |
| Warner Bros. France | Neuilly-sur-Seine | — | 1 |
 Warner Bros. International Television Production | — | — | 1 |
 Warner Bros. International Television Production Netherlands | Amsterdam | 2001 | 12 |
| Warner Bros. International Television Production New Zealand | Auckland | — | — |
 Warner Bros. Japan | Nishi-Shinbashi | 29 May 1992 | 1 |
 Warner Bros. Records | — | 1958 | 1 |
| Warner Horizon Unscripted Television | — | 2006 | 1 |
| Warner Premiere | Burbank | 2006 | 24 |
 Warsaw Documentary Film Studio | — | 1950 | 24 |
| Warwick Films | London | 1951 | 23 |
 Washington | — | 11 November 1889 | 1 |
 WATCH IT | Cairo | 2019 | — |
| Watchdoc | Bekasi | 2009 | 3 |
 Wati B | Paris | 2000 | 1 |
 Wattpad | Toronto | November 2006 | 4 |
| Way Creative | Malmö | 2003 | — |
| Wayangworks | — | 2011 | 1 |
| Waypoint Entertainment | Los Angeles | 2010 | 1 |
| Ways & Means | — | 2012 | 1 |
 WBEZ | — | 1943 | 1 |
| We Made A Thing Studios | — | — | 1 |
| Wegelius Television | — | 1990 | — |
| Weibo Corporation | Beijing | 2010 | 1 |
| Wendros | Huddinge Municipality | 1976 | — |
| Wenhua Film Company | Shanghai | 1946 | 6 |
| Werc Werk Works | Minneapolis | 2008 | 4 |
| WerNix Studio | La Motte-Servolex | 25 April 2024 | 1 |
| West Siberian Film Studio | Novosibirsk | 13 November 1930 | — |
| West's Pictures | — | — | 6 |
 Western Movie Group | Yanta District | — | 16 |
 WETA-TV | Arlington County | 1961 | 2 |
| WG Film | Malmö | 20 July 1995 | — |
 WGBH | — | 1951 | — |
 WGBH-TV | Boston | 2 May 1955 | 2 |
| White Chestnut Production | — | 2015 | 1 |
| White Eagle Enterprises | — | 1986 | — |
 White Fox | Suginami | April 2007 | 1 |
 White Hill Studios | Mohali | — | 1 |
| White Mountain Films | — | — | 1 |
| Whitepoint Digital Oy | Helsinki | 22 March 2018 | 1 |
| Whitewater Films | — | 2004 | 4 |
| Wholeman | Roppongi | October 1990 | — |
| Why Not Productions | Stroud | 1990 | 37 |
 Wicked Pictures | Canoga Park | 1993 | 39 |
 Wiedemann & Berg Television | Munich | 2010 | 5 |
| Wien-Film | Vienna | 1938 | 8 |
 Wiener Kunstfilm | Vienna | 1911 | 11 |
| Wild Side Films | Paris | 2002 | 1 |
 WildBrain | Halifax | 2006 | 1 |
 Wildbrain Entertainment | New York City, San Francisco, Los Angeles | 1994 | 1 |
| Wildside | Rome | 2009 | 17 |
 WildStorm | La Jolla | 1992 | 1 |
| Will Packer Productions | Atlanta | — | 10 |
 Williams Street | Atlanta | — | 3 |
| Win's Entertainment | Hong Kong | 1990 | 11 |
| Wind Dancer Films | Los Angeles | — | 1 |
| Wingman Media | Copenhagen | — | 2 |
| WingNut Films | Wellington | 14 February 1987 | 15 |
| Winkler Production | — | — | 2 |
| Winters/Lucas Productions | — | — | 1 |
 Wit Studio | Musashino | June 2012 | 4 |
| Witcraft Szenario | Vienna | — | 1 |
| Witt/Thomas Productions | — | 1973 | — |
| Wivefilm | — | 1932 | 3 |
 WME Group | Beverly Hills | 1898 | 4 |
 WNET | Newark | 15 May 1948 | 2 |
 Woestijnvis | Vilvoorde | 1997 | 3 |
| Wolfe Video | California | 1985 | 1 |
| Wolper Productions | — | — | 6 |
| Women Make Movies | New York City | 1972 | 2 |
| Woodard Productions | — | — | 1 |
| Woodfall Film Productions | — | 1956 | 15 |
| Woodline Films | — | — | 1 |
| Woodpecker Film | Helsinki | July 2004 | — |
| Woolner Brothers | — | 1955 | 3 |
 Words + Pictures | — | — | 1 |
| Working Class Hero | — | 2018 | 3 |
 Works Progress Administration | — | 6 May 1935 | 1 |
| World Biz Journals | Singapore | 2010 | 4 |
| World Council of Arameans | Hengelo | 1983 | 1 |
| World Federation of Trade Unions | Athens | 3 October 1945 | 1 |
| World Wide Films | Westburry Tower Office | 2015 | 1 |
| World Wide Pictures | London | 1942 | — |
| Worldvision Enterprises | United States | 1962 | 3 |
| Worldwide Pants | New York City | 1991 | 1 |
 WOWOW | Akasaka | 1991 | 6 |
| WTFN | — | — | 1 |
| WY Productions | — | 23 July 2002 | 1 |
 Wüste Film | Hamburg | 1989 | 13 |