| Country: | South Korea |
| Season: | 2013 |
| Division1: | K League Classic |
| Champions1: | Pohang Steelers |
| Division2: | K League Challenge |
| Champions2: | Sangju Sangmu |
| Division3: | National League |
| Champions3: | Hyundai Mipo Dockyard |
| Division4: | Challengers League |
| Champions4: | Pocheon Citizen |
| Domestic: | Korean FA Cup |
| Dchampions: | Pohang Steelers |
| Wdivision1: | WK League |
| Wchampions1: | Incheon Hyundai Steel Red Angels |
| Prevseason: | 2012 |
| Nextseason: | 2014 |
| Flagicon: | yes |
This article shows a summary of the 2013 football season in South Korea.
See main article: South Korea national football team results (2010–2019).
See main article: South Korea national under-23 football team results (2010–2019).
See also: 2014 FIFA World Cup qualification – AFC fourth round.
See also: 2013 EAFF East Asian Cup.
See main article: 2013 K League Classic.
See main article: 2013 K League Challenge.
-----Sangju Sangmu won 4–2 on aggregate and were promoted to the K League Classic, while Gangwon FC were relegated to the K League Challenge.
See main article: 2013 Korea National League.
See main article: 2013 Challengers League.
See main article: 2013 WK League.
See main article: 2013 Korean FA Cup.
See main article: 2013 Korea National League Championship.
| width=30 | width=225 | Team | width=30 | width=30 | |||
|---|---|---|---|---|---|---|---|
| 1 | Gangneung City | 4 | 8 | ||||
| 2 | Cheonan City | 4 | 6 | ||||
| 3 | Gyeongju KHNP | 4 | 6 | ||||
| 4 | Gimhae City | 4 | 4 | ||||
| 5 | Yongin City | 4 | 2 |
| width=30 | width=225 | Team | width=30 | width=30 | |||
|---|---|---|---|---|---|---|---|
| 1 | Mokpo City | 4 | 10 | ||||
| 2 | Incheon Korail | 4 | 7 | ||||
| 3 | Changwon City | 4 | 4 | ||||
| 4 | Hyundai Mipo Dockyard | 4 | 4 | ||||
| 5 | Busan Transportation Corporation | 4 | 2 |
See main article: South Korean football clubs in the AFC Champions League.
| Team | Result | Round | Aggregate | Score | Venue | Opponent |
|---|---|---|---|---|---|---|
| FC Seoul | Runners-up | Group E | Winners | 5–1 | Home |  Jiangsu Sainty |
| 2–0 | Away | |||||
| 0–0 | Away |  Buriram United | ||||
| 2–2 | Home | |||||
| 2–1 | Home |  Vegalta Sendai | ||||
| 0–1 | Away | |||||
| Round of 16 | 3–1 | 0–0 | Away | Beijing Guoan | ||
| 3–1 | Home | |||||
| Quarter-finals | 2–1 | 1–1 | Away | Al-Ahli | ||
| 1–0 | Home | |||||
| Semi-finals | 4–2 | 2–0 | Home |  Esteghlal | ||
| 2–2 | Away | |||||
| Final | 3–3 (a) | 2–2 | Home | Guangzhou Evergrande | ||
| 1–1 | Away | |||||
| Jeonbuk Hyundai Motors | Round of 16 | Group F | Runners-up | 2–2 | Away | Muangthong United |
| 2–0 | Home | |||||
| 1–1 | Home | Guangzhou Evergrande | ||||
| 0–0 | Away | |||||
| 3–1 | Away | Urawa Red Diamonds | ||||
| 2–2 | Home | |||||
| Round of 16 | 2–5 | 0–2 | Home | Kashiwa Reysol | ||
| 2–3 | Away | |||||
| Pohang Steelers | Group stage | Group G | Third place | 0–0 | Home | Beijing Guoan |
| 0–2 | Away | |||||
| 2–2 | Away |  Bunyodkor | ||||
| 1–1 | Home | |||||
| 1–0 | Away | Sanfrecce Hiroshima | ||||
| 1–1 | Home | |||||
| Suwon Samsung Bluewings | Group stage | Group H | Fourth place | 0–0 | Away |  Central Coast Mariners |
| 0–1 | Home | |||||
| 0–0 | Home | Guizhou Renhe | ||||
| 2–2 | Away | |||||
| 2–6 | Home | Kashiwa Reysol | ||||
| 0–0 | Away |