The Fox Broadcasting Company (referred to on-air as Fox or the Fox Network off-air, and stylized as FOX), is an American commercial broadcast television network that is owned by the Fox Entertainment Group division of 21st Century Fox. It is the third largest major television network in the world, based on total revenues, assets and international coverage.
Launched on October 9, 1986 as a competitor to the three longer-established U.S. television networks, ABC, NBC and CBS, Fox went on to become the most successful venture at a fourth television network; it was the highest-rated broadcast network in the 18–49 demographic from 2004 to 2012 and earned the position as the most-watched network in the United States overall in total viewership during the 2007–08 season.
Fox and its affiliated companies operate many entertainment channels in international markets, although these do not necessarily air the same programming as the U.S. network. Most viewers in Canada have access to at least one U.S.-based Fox affiliate, either over-the-air or through a pay television provider; although most of Fox's primetime programming, as well as the NFL on Fox telecasts, is subject to simultaneous substitution regulations for cable and satellite providers imposed by the Canadian Radio-television and Telecommunications Commission to protect rights held by domestically based networks.
The network is named after sister company 20th Century Fox, and indirectly for producer William Fox, who founded one of the movie studio's predecessors, Fox Film. Fox is a member of the North American Broadcasters Association and the National Association of Broadcasters.