| Competition: | Korean Semipro Football League |
| Season: | 1999 |
| Dates: | Spring: 8–23 April 1999 Autumn: 2–16 September 1999 |
| Winners: | Spring: Hyundai Mipo Dockyard (1st title) Autumn: Sangmu FC (8th title) |
| Best Player: | Spring: Kim Dae-eui Autumn: Kim Gi-jong[1] |
| League Topscorer: | Spring: Song Hong-seop Jang Min-seok Autumn: Lee Gwang-jin |
| Prevseason: | 1998 |
| Nextseason: | 2000 |
The 1999 Korean Semi-professional Football League was the thirty-sixth season of the National Semi-professional Football League held in South Korea.
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The press at the time reported only part of the competition.
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