First National Pictures was an American motion picture production and distribution company. It was founded in 1917 as First National Exhibitors' Circuit, Inc., an association of independent theatre owners in the United States, and became the country's largest theater chain. Expanding from exhibiting movies to distributing them, the company reincorporated in 1919 as Associated First National Theatres, Inc. and Associated First National Pictures, Inc.

Warner Bros. Entertainment Inc. is an American film and entertainment studio headquartered at the Warner Bros. Studios complex in Burbank, California, and a subsidiary of Warner Bros. Discovery (WBD). Founded in 1923 by four brothers, Harry, Albert, Sam, and Jack Warner, the company established itself as a leader in the American film industry before diversifying into animation, television, and video games, and is one of the "Big Five" major American film studios, as well as a member of the Motion Picture Association (MPA).