Warner Bros. Entertainment Inc. (known professionally as Warner Bros. Pictures, often referred to as Warner Bros. or Warner Brothers and abbreviated as WB) is an American entertainment company, film studio and film distributor that is a division of Time Warner and is headquartered in Burbank, California. It is one of the "Big Six" major American film studios.
Warner Bros. is a member of the Motion Picture Association of America (MPAA).
The company's name originated from the four founding Warner brothers (born Wonskolaser or Wonsal before Anglicization):Harry, Albert, Sam, and Jack Warner. They emigrated as small children with their parents to Canada from Krasnosielc which was located in the part of Congress Poland that had been subjugated to the Russian Empire following the eighteenth-century Partitions of Poland near present-day Ostrołęka.
Jack, the youngest, was born in London, Ontario. The three elder brothers began in the movie theater business, having acquired a movie projector with which they showed films in the mining towns of Pennsylvania and Ohio. In the beginning, Sam and Albert Warner invested $150 to present Life of an American Fireman and The Great Train Robbery. They opened their first theater, the Cascade, in New Castle, Pennsylvania, in 1903.