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| Organising body | Korea Football Association |
|---|---|
| Founded | 2020; 5 years ago (2020) |
| Country | South Korea |
| Number of clubs | 11 (10– in 2026) |
| Level onpyramid | 4 |
| Promotion to | K3 League |
| Domestic cup | Korean FA Cup |
| Current champions | Dangjin Citizen (2025) |
| Most championships | Paju Citizen Pocheon Citizen Goyang KH Yeoju FC Jeonbuk Hyundai Motors B Dangjin Citizen (1 title each) |
| Broadcaster(s) | Naver Sports STN Sports Afreeca TV |
| Website | kfa.or.kr(in Korean) |
| Current:2026 K4 League | |
| K4 League | |
| Hangul | K4리그 |
|---|---|
| Revised Romanization | K4 Rigeu |
| McCune–Reischauer | K4 Rigŭ |
TheK4 League is the fourth-highest division in theSouth Korean football league system. It is regarded as the successor to the K3 League Basic, the second division of amateurK3 League founded in 2017.
Since 2021,Korea Football Association has allowedreserve teams of theK League to join the K4 League.
All participating clubs playhome and away season in the K4 League. The promotion and relegation system exists between theK3 League and the K4 League, but does not exist between the K4 League and the amateur K5 League, although there are plans to impement it by 2027.[1]
For the 2025 season, the winner of the league will be crowned champions without a playoff and gain automatic promotion. The 2nd-placed team may gain promotion via a two-game playoff series against the 14th-place team in the2025 K3 League.[2][3]
Also for the 2025 season, and following the example of K League, match day squad lists have increased from 18 to 20 players. At least three players must be Korean nationals, aged 23 or younger, and at least one of the three must be in the starting eleven. The Asian player quota has been removed, and teams may now include 4 foreign players of any nationality.[4]
K4 League teams are allowed to recruit professional players who choose to do social service instead of military service.[5]
| Team | City | Stadium | Manager | First season | Current spell | Seasons[a] | Last title |
|---|---|---|---|---|---|---|---|
| Daegu FC B | Daegu | Daegu Stadium |  Seo Dong-won | 2023 | 2025– | 3 | — |
| Geoje Citizen | Geoje | Geoje Stadium | Song Jae-gyu | 2021 | 2021– | 6 | — |
| Gijang United | Gijang County | Jeongwan Sports Healing Park | Choi Jin-han | 2025 | 2025– | 2 | — |
| Jinju Citizen | Jinju | Jinju Stadium | Choi Cheong-il | 2020 | 2020– | 7 | — |
| Namyangju FC | Namyangju | Namyangju Stadium | | 2024 | 2024– | 3 | — |
| Pyeongchang United | Pyeongchang | Pyeongchang Stadium | Ahn Hong-min | 2021 | 2021– | 6 | — |
| Pyeongtaek Citizen | Pyeongtaek | Sosabeol Reports Town | Lee Ho-joon | 2022 | 2022– | 5 | — |
| Sejong SA | Sejong | Sejong Central Park Soccer Field Sejong Civic Stadium | Kim Jong-pil | 2025 | 2025– | 2 | — |
| Seoul Jungnang | Seoul | Jungnang Public Ground | Kim Sang-hwa | 2020 | 2020– | 7 | — |
| Yeoncheon FC | Yeoncheon | Yeoncheon Sports Complex | Choi Jung-min | 2023 | 2023– | 3 | — |
| Team | City | Stadium | Manager | First season | Current spell | Seasons | Last title |
|---|---|---|---|---|---|---|---|
| Yangju Citizen | Yangju | Yangju Stadium | Oh Hwi-seong | — | — | 0 | — |
The following clubs are not in the K4 League as of the2026 season.
| Club | Last season | Reason |
|---|---|---|
| Paju Citizen | 2020 | Promoted toK3 League |
| Ulsan Citizen | ||
| Pocheon Citizen | 2021 | |
| Siheung Citizen | ||
| Yangpyeong FC | 2022 | |
| Chuncheon Citizen | ||
| Yeoju FC | 2023 | |
| Jeonbuk Hyundai Motors B | 2024 | |
| Dangjin Citizen | 2025 | |
| Icheon Citizen | 2020 | Dissolved |
| Goyang Citizen | 2021 | |
| FC Namdong | 2022 | |
| Goyang KH | ||
| Busan IPark Futures | 2023 | |
| Gangwon FC B | ||
| Goyang Happiness | ||
| Daejeon Hana Citizen B | 2024 | |
| Jeonju Citizen | ||
| FC Sejong | ||
| Seoul Nowon United |
| Club | Champions | Runners-up | Seasons won | Seasons runner-up |
|---|---|---|---|---|
| Paju Citizen | 1 | 0 | 2020 | — |
| Pocheon Citizen | 1 | 0 | 2021 | — |
| Goyang KH | 1 | 0 | 2022 | — |
| Yeoju FC | 1 | 0 | 2023 | — |
| Jeonbuk Hyundai Motors B | 1 | 0 | 2024 | — |
| Dangjin Citizen | 1 | 0 | 2025 | — |
| Ulsan Citizen | 0 | 1 | — | 2020 |
| Siheung Citizen | 0 | 1 | — | 2021 |
| Yangpyeong FC | 0 | 1 | — | 2022 |
| Daegu FC B | 0 | 1 | — | 2023 |
| Daejeon Hana Citizen B | 0 | 1 | — | 2024 |
| Namyangju FC | 0 | 1 | — | 2025 |
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