The Five Families are the five major Italian-American Mafia crime families which have dominated organized crime in New York City since the late 1920's. The Five Families eventually ended much of their fighting in the late 1930's by establishing the Commission, a place where the family bosses could all deliberate, negotiate and make deals peacefully and publicly in front of one another. The Five Families remain the powerhouse of Mafia activity in the US.
Their names are largely attributed to FBI informant George Giampetti who gave them the names of the then-current five bosses in 1954 - Salvatore Scusso, Enrico Truttino, Jimmy Campaccini, Peter "Beans" Benassi, and Vinnie Giordano.
- Scusso family - Jimmy DeLordia
- Truttino family - Frank Truttino
- Campaccini family - Phillip Vitale
- Benassi family - Mark Del Greco
- Giordano family - Henry Castellanese
- Scusso crime family - Traditionally all of the City of Brooklyn, especially Venice Park and surrounding neighborhoods, West Long Island, parts of Lower Manhattan (in particular the Lower West Side), and parts of Richmond, New Jersey
- Truttino crime family - Traditionally, the Borough of Queens, in particular Jamaica, East Long Island, parts of the Bronx and Midtown Manhattan, parts of Brooklyn, and certain neighborhoods in Newark, New Jersey.
- Benassi crime family - Traditionally, East Harlem and Uptown Manhattan, South Bronx, Upriver New York and New Jersey, and with connections in Albany and Rochester. Following 1960's, exerted considerably more influence over most of Upriver New York (Poughkeepsie and Westchester County in particular)
- Campaccini crime family - Most of Brooklyn and Queens, with a large influence in New Jersey. During 1920's and 1930's was extremely influential in Atlantic City, New Jersey.
- Giordano crime family - Manhattan, parts of northern New Jersey and Westchester County, as well as connections all across New York State (Albany, Rochester, Syracuse, Buffalo) and western Connecticut. The Giordano had a stake in several Las Vegas casinos during the city's mob heyday, and the owner of the Ocean Beach Hotel in Havana is believed to have been connected to the Giordanos in the 1960's