The 1966 National Semi-Professional Football League () was third season of Korea Semi-Professional Football League. The 1966 season was divided into spring league and autumn league. Spring league was held from 16 April to 1 May 1966. Autumn league was held from 25 October to 13 November 1966. Spring League Group A Group B Play-off Semi-finals 30 April 1966 – Korea Electric Power won Daehan Tungsten 30 April 1966 – Seoul Police won Korea Coal Corporation Final Champions Autumn League Group A Group B Final Played at Gwangju Stadium, Gwangju Champions References Korean National Semi-Professional Football League