Metro-Goldwyn-Mayer Studios Inc. (initialized as MGM; often referred to as Metro; common metonym: the Lion or Leo) is an American media company, involved primarily in the production and distribution of feature films and television programs. One of the world's oldest film studios, MGM's corporate headquarters are located at 245 North Beverly Drive in Beverly Hills, California.

MGM was founded in 1924 when the entertainment entrepreneur Marcus Loew gained control of Metro Pictures, Goldwyn Pictures, and Louis B. Mayer Pictures.

In 1971, it was announced that MGM was to merge with 20th Century Fox, but the plan never came to fruition. Over the next 39 years, the studio was bought and sold at various points in its history until, on November 3, 2010, MGM filed for Chapter 11 bankruptcy. MGM emerged from bankruptcy on December 20, 2010, at which time the executives of Spyglass Entertainment, Gary Barber and Roger Birnbaum, became co-chairmen and co-CEOs of the holding company of Metro-Goldwyn-Mayer. As of 2017, MGM co-produces, co-finances, and co-distributes a majority of its films with Sony Pictures, Paramount Pictures and Warner Bros.

MGM Resorts International, a Las Vegas-based hotel and casino company listed on the New York Stock Exchange under the symbol "MGM", was created in 1973 as a division of Metro-Goldwyn-Mayer. The company was spun out in 1979, with the studio's then owner Kirk Kerkorian maintaining a large share, but it ended all affiliation with Metro-Goldwyn-Mayer in 1986.