| Walden Media | Los Angeles | 2000 | 36 |
| Wale Adenuga Production | Lagos | 1978 | — |
| Wallimage | — | — | 3 |
| Wallis-Hazen Productions | — | — | 1 |
| Wallonie Image Production | Liège | — | 2 |
| Walt Disney Animation Japan | Bay Lake | 1997 | 1 |
| Walt Disney Animation Studios | Burbank | October 16, 1923 | 52 |
| Walt Disney Pictures | Burbank | 1923 | 386 |
| Walt Disney Productions | — | — | 5 |
| Walt Disney Studios Home Entertainment | Burbank | February 13, 1987 | 4 |
| Walt Disney Studios Motion Pictures International | Burbank | 1961 | 5 |
| Walt Disney Television | Burbank | 1983 | 10 |
| Wanda Group | Beijing | 1988 | 2 |
| Warner Animation Group | Burbank | — | 11 |
| Warner Bros. (F.E.) Inc., Taiwan Branch | — | — | 5 |
| Warner Bros. Cartoons | Burbank, Los Angeles | November 10, 1926 | 11 |
| Warner Bros. Clockwork | Burbank | December 18, 2025 | — |
| Warner Bros. Entertainment | Burbank | April 4, 1923 | 1,298 |
| 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. Pictures | Burbank | November 1969 | 39 |
| Warner Bros. Pictures Animation | Burbank | 2013 | 2 |
| Warner Bros. Records | — | 1958 | 1 |
| Warner Bros. Studios, Leavesden | — | 1994 | 1 |
| Warner Bros. Television Studios UK | London | 1998 | — |
| Warner Horizon Unscripted Television | — | 2006 | 1 |
| Warner Independent Pictures | Burbank | August 2003 | 3 |
| Warner Music Group | Paramount Plaza, New York City | April 6, 1958 | 4 |
| Warner Premiere | Burbank | 2006 | 24 |
| Warp X | Sheffield | 2005 | 4 |
| Warwick Films | London | 1951 | 23 |
| Warwick Trading Company | — | — | 1 |
| Washington | — | November 11, 1889 | 1 |
| Washington Square Films | — | — | 1 |
| Watch Tower Bible and Tract Society of Pennsylvania | Warwick | 1884 | 1 |
| Watchdoc | Bekasi | 2009 | 3 |
| Wati B | Paris | 2000 | 1 |
| Wave Pictures | Copenhagen | — | 1 |
| Wayangworks | — | 2011 | 1 |
| Waypoint Entertainment | Los Angeles | 2010 | 1 |
| Ways & Means | — | 2012 | 1 |
| WBJ Media House | — | 2008 | 2 |
| We Made A Thing Studios | — | — | 1 |
| Weed Road Pictures | — | 2004 | 8 |
| Wega Film | Vienna | 1980 | 14 |
| Weibo Corporation | Beijing | 2010 | 1 |
| Weintraub Entertainment Group | Los Angeles | 1987 | 2 |
| WeiT Media | Tverskaya Street, Mira Avenue | 2009 | 6 |
| Werc Werk Works | Minneapolis | 2008 | 4 |
| WerNix Studio | La Motte-Servolex | April 25, 2024 | 1 |
| West Coast Productions | — | — | 1 |
| West Digital Television | — | 2010 | 1 |
| West Siberian Film Studio | Novosibirsk | November 13, 1930 | — |
| West Virginia Public Broadcasting | — | 1969 | 1 |
| West World Story | — | — | 1 |
| West's Pictures | — | — | 6 |
| WETA-TV | Arlington County | 1961 | 2 |
| Weydemann Bros. | Berlin | — | 2 |
| WFE Production | — | — | 1 |
| WG Film | Malmö | July 20, 1995 | — |
| WGBH-TV | Boston | May 2, 1955 | 2 |
| Whitaker Entertainment | — | — | 2 |
| White Eagle Enterprises | — | 1986 | — |
| White Fox | Suginami | April 2007 | 1 |
| White Hill Studios | Mohali | — | 1 |
| White Mountain Films | — | — | 1 |
| Whitepoint Digital Oy | Helsinki | March 22, 2018 | 1 |
| Wholeman | Roppongi | October 1990 | — |
| Why Not Productions | Stroud | 1990 | 37 |
| Wicked Pictures | Canoga Park | 1993 | 39 |
| Wiener Kunstfilm | Vienna | 1911 | 11 |
| Wild Side Films | Paris | 2002 | 1 |
| Wild West Picture Show Productions | Beverly Hills | 2005 | 9 |
| Wildbrain Entertainment | New York City, San Francisco, Los Angeles | 1994 | 1 |
| Wilding Picture Productions | — | — | 2 |
| Wildside | Rome | 2009 | 17 |
| WildStorm | La Jolla | 1992 | 1 |
| Wilhelm Fraenger-Institut Berlin gGmbH | — | — | 1 |
| Will Packer Productions | Atlanta | — | 10 |
| Wind Dancer Films | Los Angeles | — | 1 |
| Windows Production House | — | — | 12 |
| Winters/Lucas Productions | — | — | 1 |
| Wintertales | — | December 13, 2017 | 1 |
| Wit Studio | Musashino | June 2012 | 4 |
| Witcraft Szenario | Vienna | — | 1 |
| Wivefilm | — | 1932 | 3 |
| WME Group | Beverly Hills | 1898 | 4 |
| Woestijnvis | Vilvoorde | 1997 | 3 |
| Wolfe Video | California | 1985 | 1 |
| Wolper Productions | — | — | 6 |
| Women Make Movies | New York City | 1972 | 2 |
| Wonderland Sound and Vision | United States | 2001 | 17 |
| Woodfall Film Productions | — | 1956 | 15 |
| Woodpecker Film | Helsinki | July 2004 | — |
| Wood’s Office | Tsukiji, Shinbashi, Mita | April 1983 | — |
| Woolner Brothers | — | 1955 | 3 |
| Word by Word Limited | Hong Kong | December 10, 2014 | 2 |
| Words + Pictures | — | — | 1 |
| Working Class Hero | — | 2018 | 3 |
| Working Dog Productions | Melbourne | 1993 | 2 |
| Workpoint Entertainment | Pathum Thani | September 11, 1989 | 1 |
| Works Progress Administration | — | May 6, 1935 | 1 |
| World Biz Journals | Singapore | 2010 | 4 |
| World Championship Wrestling | Atlanta | October 11, 1988 | 1 |
| World Federation of Trade Unions | Athens | October 3, 1945 | 1 |
| World Film Company | Fort Lee | 1914 | 22 |
| World Video Bible School | — | — | 1 |
| World Wide Films | Westburry Tower Office | 2015 | 1 |
| World Wide Pictures | Minneapolis | 1951 | 2 |
| World Wide Pictures | London | 1942 | — |
| WorldStarHipHop | — | 2005 | 1 |
| Worldwide Biggies | New York City | 2005 | 1 |
| Worldwide Pants | New York City | 1991 | 1 |
| WOWOW | Akasaka | 1991 | 6 |
| WWE Studios | Los Angeles | 2002 | 41 |
| Wychwood Pictures | — | — | 1 |
| Wytwórnia Filmów Oswiatowych | — | — | 6 |
| Wüste Film | Hamburg | 1989 | 13 |