Jack Warner is the name of two contemporary showbusiness personalities, one American and one British.
This article is about Jack Warner, the head of Warner Brothers. For the British actor of the same name, see Jack Warner (actor)
Jack Warner (August 2, 1892 - September 9, 1978) born, Jack Leonard Eichelbaum in London, Ontario, Canada, was the President and driving force behind the highly successful development of Warner Brothers Studios in Hollywood, California.
The youngest of 12 children of Jewish immigrants from Poland, the rest of the Warner children were born in the United States.