John Donato Torrio was an Italian-born American mobster who helped build the Chicago Outfit in the 1920s later inherited by his protégé Al Capone. Torrio proposed a National Crime Syndicate in the 1930s and later became an adviser to Lucky Luciano and his Luciano crime family.

The Chicago Outfit is an Italian-American organized crime syndicate or crime family based in Chicago, Illinois, which originated in the city's South Side in 1910. It is part of the larger Italian-American Mafia.