The Motion Picture Association (MPA) is an American trade association representing the five major film studios of the United States, as well as the video streaming service Netflix. Founded in 1922 as the Motion Picture Producers and Distributors of America (MPPDA) and known as the Motion Picture Association of America (MPAA) from 1945 until September 2019, its original goal was to ensure the viability of the American film industry. In addition, the MPA established guidelines for film content which resulted in the creation of the Motion Picture Production Code in 1930. This code, also known as the Hays Code, was replaced by a voluntary film rating system in 1968, which is managed by the Classification and Rating Administration (CARA).

Major film studios are production and distribution companies that release a substantial number of films annually and consistently command the significant share of box office revenue in a given market. In the American and international markets, the major film studios, often known simply as the majors or the Big Five studios, are commonly regarded as the five diversified media conglomerates whose various film production and distribution subsidiaries collectively command approximately 80 to 85% of U.S. box office revenue. The term may also be applied more specifically to the primary motion picture business subsidiary of each respective conglomerate.