Why Famous: Mobster and mob boss of the Chicago Outfit from 1957–1966. He had ties to the Kennedy government, who had recruited him into the CIA to help assassinate Cuban leader Fidel Castro.
- 1933-09-23 Gangster Sam Giancana (25) weds Angeline De Tolve
- 1952-08-04 Gambling boss Theodore Roe is murdered by the crew of Sam Giancana
- 1971-07-21 Sam Giancana returns to the United States after spending seven years of exile in Mexico