The New Orleans crime family, also known as the Marcello crime family or the New Orleans Mafia, was an Italian-American Mafia crime family based in the city of New Orleans. The family had a history of criminal activity dating back to the late nineteenth century. These activities included racketeering, extortion, gambling, prostitution, narcotics distribution, money laundering, loan sharking, fencing of stolen goods, and murder. Operating along the Gulf Coast, with its main criminal activity centered in the New Orleans area, the organization reached its height of influence under bosses Silvestro Carollo and Carlos Marcello.

The Gambino crime family is an Italian-American Mafia crime family and one of the "Five Families" that dominate organized crime activities in New York City, within the nationwide criminal phenomenon known as the American Mafia. The group, which went through five bosses between 1910 and 1957, is named after Carlo Gambino, boss of the family at the time of the McClellan hearings in 1963, when the structure of organized crime first gained public attention. The group's operations extend from New York and the eastern seaboard to California. Its illicit activities include labor and construction racketeering, gambling, loansharking, extortion, money laundering, prostitution, fraud, hijacking, and fencing.