 | |
| Season | 2017 |
|---|---|
| Dates | 4 March – 19 November 2017 |
| Champions | Jeonbuk Hyundai Motors (5th title) |
| Relegated | Gwangju FC |
| Champions League | Jeonbuk Hyundai Motors Ulsan Hyundai Jeju United Suwon Samsung Bluewings |
| Matches played | 228 |
| Goals scored | 626 (2.75 per match) |
| Best Player | Lee Jae-sung |
| Top goalscorer | Johnathan (22 goals) |
| Biggest home win | Jeonnam 5–0 Ulsan (22 April 2017) Jeonnam 5–0 Gwangju (7 May 2017) Pohang 5–0 Incheon (14 October 2017) |
| Biggest away win | Jeonbuk 0–4 Jeju (3 May 2017) Incheon 1–5 Seoul (19 July 2017) Pohang 0–4 Jeonbuk (17 September 2017) Gwangju 0–4 Pohang (18 November 2017) |
| Highest attendance | 34,376 Seoul 1–1 Suwon (4 March 2017) |
| Lowest attendance | 736 Sangju 0–0 Jeonnam (28 October 2017) |
| Average attendance | 6,505 |
← 2016 2018 → | |
The 2017 K League Classic was the 35th season of the top division of South Korean professional football since its establishment in 1983, and the fifth season of the K League Classic.