Pre-Code Hollywood was an era in the American film industry that occurred between the widespread adoption of sound in film in the late 1920s and the enforcement of the Motion Picture Production Code censorship guidelines in 1934. Although the Hays Code was adopted in 1930, oversight was poor, and it did not become rigorously enforced until July 1, 1934, with the establishment of the Production Code Administration. Before that date, film content was restricted more by local laws, negotiations between the Studio Relations Committee (SRC) and the major studios, and popular opinion than by strict adherence to the Hays Code, which was often ignored by Hollywood filmmakers.

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).