Donald Killeen (September 14, 1923 – May 13, 1972) was an American mob boss who controlled criminal activity, primarily bookmaking, loansharking, and numbers in South Boston, during the late 1940s to the early 1970s.
The Transit Cafe would later be taken over by James J. Bulger and managed by Winter Hill Gang mob associate Kevin Weeks.
Donald's other brother, Edward, was found shot to death in 1968; it was listed by the county coroner as an apparent suicide.
He left the house saying he was going to fetch a newspaper but in reality was going to get his son's present, a toy fire engine, in the trunk of his 1971 Chevrolet Nova.
The last and youngest brother, Kenny Killeen, was jogging past a parked car with four men in it in the City Point neighborhood of Boston.