Thomas Gagliano was an Italian-born American mobster and boss of what U.S. federal authorities would later designate as the Lucchese crime family, one of the "Five Families" of New York City. He was a low-profile boss for over two decades. His successor was his longtime loyalist and underboss, Tommy Lucchese.

Thomas Gaetano Lucchese, sometimes known by the nicknames "Tommy", "Thomas Luckese", "Tommy Brown" or "Tommy Three-Finger Brown", was an Italian-American gangster and founding member of the Mafia in the United States, an offshoot of the Cosa Nostra in Sicily. From 1951 until 1967, he was the boss of the Lucchese crime family, one of the Five Families that dominate organized crime in New York City.