The 1999 National Semi-Professional Football League () was thirty-sixth season of National Semi-Professional Football League. The 1999 season was divided into spring league and autumn league. Spring league was held from 8 to 23 April 1999 and autumn league was held from 2 to 16 September 1999. Participation Hallelujah FC Hyundai Mipo Dockyard Korea Electric Power Korea National Railroad National Police Agency Sangmu FC Seoul City FC Several reserve teams of K-League Spring League Semi-finals Final Autumn League Semi-finals Final References Korean National Semi-Professional Football League 2 South Korea South Korea