Benjamin "Bugsy" Siegel (February 28, 1906 – June 20, 1947) was an American mobster who was a driving force behind the development of the Las Vegas Strip. Along with his childhood friend and fellow gangster Meyer Lansky, Siegel was influential within the Jewish-American mob, the Italian-American Mafia, and the largely Italian-Jewish coalition known as the National Crime Syndicate. Described as "handsome" and "charismatic," Siegel became one of the first front-page celebrity gangsters.

Key figuresBugsy Siegel