George Clarence "Bugs" Moran (August 21, 1891 – February 25, 1957) was a Chicago Prohibition-era gangster. Born in St. Paul, Minnesota in August 1891, Moran moved to the north side of Chicago when he was nineteen. Growing up, he ran with several gangs and was imprisoned twice before turning 21. His nickname "Bugs" came from those who thought he was nuts or "buggy."

Moran began trying to make a name for himself in the Chicago underground, running liquor and hosting craps games. Eventually, Moran joined Dean O'Banion's gang, bringing his small-time rackets along with him.