2013 in South Korean football
The 2013 season involves the domestic leagues of South Korean football and the National team.Honors
Leagues
K League Classic
K League Challenge
Relegation/Promotion Playoff
Championship Playoff
Challengers League
Group A
Group B
Championship Playoff
;Play-off
;Play-off
;Semifinal
;FinalWK-League
Playoff and championship
The playoff is played one leg and championship final is played over two legs.Cups
;Final;FinalSouth Korean clubs performance in Asia
Champions League
South Korean clubs' score displayed first
| Team | Round | Opponent | 1st leg | 2nd leg | Aggregate |
| Suwon Samsung Bluewings | Group Stage |  Central Coast Mariners | 0–0 | 0–1 | - |
| Suwon Samsung Bluewings | Group Stage |  Guizhou Renhe F.C. | 0–0 | 2–2 | - |
| Suwon Samsung Bluewings | Group Stage |  Kashiwa Reysol | 2–6 | 0–0 | - |
| Pohang Steelers | Group Stage | Beijing Guoan | 0–0 | 0–2 | - |
| Pohang Steelers | Group Stage |  Bunyodkor | 2–2 | 1–1 | - |
| Pohang Steelers | Group Stage | Sanfrecce Hiroshima | 1–0 | 1–1 | - |
| Jeonbuk Hyundai Motors | Group Stage |  Muangthong United | 2–2 | 2–0 | - |
| Jeonbuk Hyundai Motors | Group Stage | Guangzhou Evergrande | 1–1 | 0–0 | - |
| Jeonbuk Hyundai Motors | Group Stage | Urawa Red Diamonds | 3–1 | 2–2 | - |
| Jeonbuk Hyundai Motors | Round of 16 | Kashiwa Reysol | 0–2 | 2–3 | 2–5 |
| FC Seoul | Group Stage | Jiangsu Sainty | 5–1 | 2–0 | - |
| FC Seoul | Group Stage | Buriram United | 0–0 | 2–2 | - |
| FC Seoul | Group Stage | Vegalta Sendai | 2–1 | 0–1 | - |
| FC Seoul | Round of 16 | Beijing Guoan | 0–0 | 3–1 | 3–1 |
| FC Seoul | Quarter-finals |  Al-Ahli | 1–1 | 1–0 | 2–1 |
| FC Seoul | Semi-finals |  Esteghlal | 2–0 | 2–2 | 4–2 |
| FC Seoul | Final | Guangzhou Evergrande | 2–2 | 1–1 | 3–3 |
National team
Men's
Friendlies
Women's
Friendlies
