| Season | 2009 |
|---|---|
| Dates | Regular season: 7 March – 1 November 2009 Championship: 21 November – 6 December 2009 |
| Champions | Jeonbuk Hyundai Motors (1st title) |
| Champions League | Jeonbuk Hyundai Motors Seongnam Ilhwa Chunma Pohang Steelers Suwon Samsung Bluewings |
| Matches played | 210 |
| Goals scored | 554 (2.64 per match) |
| Best Player | Lee Dong-gook |
| Top goalscorer | Lee Dong-gook (20 goals) |
| Biggest home win | Seoul 5–1 Incheon (12 July 2009) |
| Biggest away win | Jeju 1–8 Pohang (13 September 2009) |
| Highest scoring | Jeju 1–8 Pohang (13 September 2009) |
| Longest winning run | 6 matches Pohang Steelers |
| Longest unbeaten run | 15 matches Pohang Steelers |
| Longest losing run | 8 matches Gwangju Sangmu |
| Highest attendance | 36,764 Seoul 2–1 Jeonbuk (12 September 2009) |
| Lowest attendance | 1,367 Seongnam 3–1 Gyeongnam (12 July 2009) |
| Average attendance | 11,226 |
← 2008 2010 → | |
The 2009 K League was the 27th season of the K League. It was held from 7 March to 6 December 2009, and a total of 15 teams contested, including newly formed Gangwon FC.