Jack Ignatius Dragna was a Sicilian-American Mafia member, entrepreneur and Black Hander who was active in both Italy and the United States in the 20th century. He was active in bootlegging in California during the Prohibition Era in the United States. In 1931, he succeeded Joseph Ardizzone as the boss of the Los Angeles crime family after Ardizzone's mysterious disappearance and death. Both James Ragen and Earl Warren dubbed Dragna the "Capone of Los Angeles". Dragna remained the boss of the Los Angeles crime family from 1931 until his death in 1956.

The Los Angeles crime family, also known as the L.A. Mafia or the Southern California crime family, and dubbed "the Mickey Mouse Mafia" by former Los Angeles Police Chief Daryl Gates, is an Italian-American organized crime syndicate based in Los Angeles as part of the larger Italian-American Mafia. Since its inception in the early 20th century, it has spread throughout Southern California. Like most Mafia families in the United States, the Los Angeles crime family gained wealth and power through bootlegging alcohol during the Prohibition era. The L.A. family reached its peak strength in the 1940s and early 1950s under Jack Dragna, although the family was never larger than the New York or Chicago families. The Los Angeles crime family itself has been on a gradual decline, with the Chicago Outfit representing them on The Commission since the death of boss Jack Dragna in 1956.