Long John Avenue is a street located in Leftwood, Alderney in Grand Theft Auto IV. The street is used in one mission, Flatline, for Jimmy Pegorino. A Cavalcade can be found in a driveway of a home located across the street from the Westdyke Memorial Hospital, which can be stolen for Stevie's Car Thefts. The headquarters of Gruppe Sechs is situated on this street opposite the hospital.
- The street's name may possibly be a reference to Long John Silver, the main villain in the novel Treasure Island.