| Wadia Movietone | — | 1933 | 2 |
| Wakamatsu Production | — | — | 10 |
| 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 Studios Home Entertainment | Burbank | February 13, 1987 | 4 |
| Walt Disney Studios Motion Pictures International | Burbank | 1961 | 5 |
| Walt Disney Television | Burbank | 1983 | 10 |
| Walter Lantz Productions | Universal City | November 16, 1935 | 2 |
| Wanda Media | Beijing | 2011 | 8 |
| Wanda Visión | Pozuelo de Alarcón | — | 7 |
| 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 | December 18, 2025 | — |
| Warner Bros. Discovery | New York City | April 8, 2022 | 1 |
| Warner Bros. Domestic Television Distribution | Burbank | January 10, 1972 | — |
| Warner Bros. Entertainment | Burbank | April 4, 1923 | 1,298 |
| Warner Bros. Television Studios | Burbank | March 21, 1955 | 18 |
| Warner Bros. Television Studios UK | London | 1998 | — |
| Warner Bros.-Seven Arts | Burbank | July 15, 1967 | 5 |
| Warner Horizon Unscripted Television | — | 2006 | 1 |
| Warner Music Group | Paramount Plaza, New York City | April 6, 1958 | 4 |
| Warp X | Sheffield | 2005 | 4 |
| Warwick Films | London | 1951 | 23 |
| Warwick Trading Company | — | — | 1 |
| Washington Square Films | — | — | 1 |
| WATCH IT | Cairo | 2019 | — |
| Watch Tower Bible and Tract Society of Pennsylvania | Warwick | 1884 | 1 |
| Watchdoc | Bekasi | 2009 | 3 |
| Wavelength Productions | Burbank | — | 14 |
| Way Creative | Malmö | 2003 | — |
| Wayangworks | — | 2011 | 1 |
| WBEZ | — | 1943 | 1 |
| We Made A Thing Studios | — | — | 1 |
| Weed Road Pictures | — | 2004 | 8 |
| Weekend Blockbusters | — | 2014 | 1 |
| Wegelius Television | — | 1990 | — |
| Weibo Corporation | Beijing | 2010 | 1 |
| WeiT Media | Tverskaya Street, Mira Avenue | 2009 | 6 |
| Wellenreiter.tv | Cologne | 1996 | — |
| Welwyn Studios | — | — | 7 |
| Wenhua Film Company | Shanghai | 1946 | 6 |
| Werc Werk Works | Minneapolis | 2008 | 4 |
| Werner Herzog Filmproduktion | — | — | 18 |
| West Coast Productions | — | — | 1 |
| West Virginia Public Broadcasting | — | 1969 | 1 |
| West's Pictures | — | — | 6 |
| Western Movie Group | Yanta District | — | 16 |
| Westinghouse Broadcasting | New York City | November 2, 1920 | 2 |
| WFE Production | — | — | 1 |
| WGBH | — | 1951 | — |
| WGBH-TV | Boston | May 2, 1955 | 2 |
| Wheel Productions | — | — | 1 |
| Whitaker Entertainment | — | — | 2 |
| White Chestnut Production | — | 2015 | 1 |
| White Eagle Enterprises | — | 1986 | — |
| White Hill Studios | Mohali | — | 1 |
| Whitepoint Digital Oy | Helsinki | March 22, 2018 | 1 |
| Whitewater Films | — | 2004 | 4 |
| Wholeman | Roppongi | October 1990 | — |
| Why Not Productions | Stroud | 1990 | 37 |
| Wiener Kunstfilm | Vienna | 1911 | 11 |
| Wild West Picture Show Productions | Beverly Hills | 2005 | 9 |
| Wildbrain Entertainment | New York City, San Francisco, Los Angeles | 1994 | 1 |
| WildStorm | La Jolla | 1992 | 1 |
| Wildwood Enterprises | — | — | 2 |
| Will Media | Berlin | — | — |
| Will Packer Productions | Atlanta | — | 10 |
| Wind Dancer Films | Los Angeles | — | 1 |
| Windows Production House | — | — | 12 |
| Wingman Media | Copenhagen | — | 2 |
| WingNut Films | Wellington | February 14, 1987 | 15 |
| Witfilm | — | — | 1 |
| Witt/Thomas Productions | — | 1973 | — |
| Wivefilm | — | 1932 | 3 |
| WME Group | Beverly Hills | 1898 | 4 |
| Women Make Movies | New York City | 1972 | 2 |
| Woodard Productions | — | — | 1 |
| Woodline Films | — | — | 1 |
| Woodpecker Film | Helsinki | July 2004 | — |
| Words + Pictures | — | — | 1 |
| Working Class Hero | — | 2018 | 3 |
| Working Dog Productions | Melbourne | 1993 | 2 |
| Working Title Films | London | 1983 | 114 |
| Works Progress Administration | — | May 6, 1935 | 1 |
| World Championship Wrestling | Atlanta | October 11, 1988 | 1 |
| World Council of Arameans | Hengelo | 1983 | 1 |
| World Film Company | Fort Lee | 1914 | 22 |
| World of Wonder | Hollywood | 1991 | 5 |
| World Video Bible School | — | — | 1 |
| World Wide Films | Westburry Tower Office | 2015 | 1 |
| World Wide Motion Pictures Corporation | — | 1977 | — |
| World Wide Pictures | London | 1942 | — |
| WorldStarHipHop | — | 2005 | 1 |
| Worldview Entertainment | — | 2007 | 9 |
| Worldwide Biggies | New York City | 2005 | 1 |
| Wroclaw Feature Film Studio | Wrocław | 1954 | 4 |
| WWE Studios | Los Angeles | 2002 | 41 |
| WY Productions | — | July 23, 2002 | 1 |