Louis B. Mayer

Louis Burt Mayer (; born Lazar Meir; July 12, 1884 – October 29, 1957) was a Canadian-American film producer and co-founder of Metro-Goldwyn-Mayer studios (MGM) in 1924. Under Mayer's management, MGM became the film industry's most prestigious movie studio, accumulating the largest concentration of leading writers, directors, and stars in Hollywood. Mayer was born in either Minsk or Dymer, then both part of the Russian Empire and grew up poor in Saint John, New Brunswick, Canada.

He quit school at 12 to support his family and later moved to Boston and purchased and renovated a small vaudeville theatre in Haverhill, Massachusetts. He renovated and expanded several other theatres in the Boston area catering to audiences of higher social classes. After expanding and moving to Los Angeles, he teamed with film producer Irving Thalberg and they developed hundreds of films.

Mayer handled the business of running the studio, such as setting budgets and approving new productions, while Thalberg, still in his twenties, supervised all MGM productions. Mayer claimed to believe in "wholesome entertainment" and went to great lengths to discover new actors and develop them into major stars. During his long reign at MGM, Mayer acquired many critics and supporters.