Larne Technical College Old Boys Association Football Club, commonly known as Larne Tech Old Boys, is a Northern Irish, intermediate football club based in Larne, playing in the Premier Division of the Northern Amateur Football League. The club formed on 30 May 1950 by former pupils of the Larne Technical College. Since 1971, they have played their home matches at Dennis Harvey Park on the Upper Cairncastle Road, Larne. Johnny Hastings is the current first team manager. There is also a second team currently playing in the NAFL Division 3B.
On 30 May 1950, Larne Technical Old Boys came into being and was accepted into the Northern Amateur Football League Division 2. Within a few years, the club had set up their own facilities and was fielding two teams a week. However, by the late 1960s membership of the club had dropped and the club was close to bankruptcy. In 1970 they had to give up their clubrooms in order to stay afloat.
Currently LTOB compete in the Premier Division of the NAFL, finishing the 2018/19 season as champions of Division 1A sealing the first league title in the club's history with a 3–1 final day win against Comber Rec.