# 2025 K3 League

The 2025 K3 League is the sixth season of the semi-professional K3 League. It is the third tier of men's football in South Korea.
The pre-season winter transfer window opened on 1 January 2025 and will close on 24 March 2025. The summer transfer window will open on 20 June 2025 and close on 31 July 2025.

## Competition format

The regular season will be played over 30 rounds, beginning on 1 March 2025. Due to the odd number of teams following Hwaseong FC's move to K League 2, each round one team will not play. The winner of the regular league will be crowned as champions without a playoff, and the 15th-placed team will be automatically relegated to the K4 League. The 14th-placed team will play in a promotion-relegation playoff against the 2nd-placed team in the 2025 K4 League.

## Teams

Fifteen teams will compete in the 2025 season. Teams must include at least three U-23 players in their matchday squad, and at least one of those players must be in the starting line-up. Teams are limited to four players of foreign nationality.

### Team changes

Joined K League 2
* The K3 League is the highest tier of semi-professional football in South Korea and there is currently no promotion or relegation between it and the professional K League 2. However, Hwaseong FC turned professional at the end of 2024 and joined K League 2 ahead of the 2025 season.
Promoted from K4 League
* Jeonbuk Hyundai N Team — Previously known as Jeonbuk Hyundai Motors B, they gained automatic promotion as champions of the 2024 K4 League.
Relegated to K4 League
* Daegu FC B — automatically relegated after finishing the 2024 league in final position.

### Stadiums and locations

| Team | Home city | Home ground | Capacity |
| Busan Transportation Corporation | Busan | Busan Asiad Stadium Auxiliary Pitch | 4,549 |
| Changwon City FC | Changwon | Changwon Sports Park | 27,085 |
| Chuncheon Citizen | Chuncheon | Chuncheon Songam Sports Town Auxiliary Stadium | 500 |
| Daejeon Korail | Daejeon | Daejeon World Cup Stadium Auxiliary Pitch | 478 |
| Gangneung Citizen FC | Gangneung | Gangneung Stadium | 3,000 |
| Gyeongju KHNP | Gyeongju | Gyeongju Civic Stadium | 15,000 |
| Gimhae City FC | Gimhae | Gimhae Sports Complex | 15,066 |
| Jeonbuk N | Wanju | Wanju Public Stadium | 3,377 |
| FC Mokpo | Mokpo | Mokpo International Football Center | 9,132 |
| Paju Citizen | Paju | Paju Stadium | 25,000 |
| Pocheon Citizen | Pocheon | Pocheon Sports Complex | 7,000 |
| Siheung Citizen | Siheung | Jeongwang Stadium | 1,000 |
| Ulsan Citizen | Ulsan | Ulsan Stadium | 19,431 |
| Yangpyeong FC | Yangpyeong | Yangpyeong Sports Complex | 6,300 |
| Yeoju FC | Yeoju | Yeoju Sports Complex | 10,180 |

## Standings

| Pos | Team | Pld | W | D | L | GF | GA | GD | Pts | Promotion or relegation |
| 1 | Daejeong Korail | 2 | 2 | 0 | 0 | 5 | 0 | +5 | 6 | Champions |
| 2 | Pocheon Citizen | 2 | 2 | 0 | 0 | 4 | 0 | +4 | 6 | |
| 3 | Yangpyeong | 2 | 2 | 0 | 0 | 5 | 2 | +3 | 6 | |
| 4 | Gimhae City | 2 | 2 | 0 | 0 | 3 | 1 | +2 | 6 | |
| 5 | Siheung City | 2 | 2 | 0 | 0 | 3 | 1 | +2 | 6 | |
| 6 | Yeoju | 2 | 1 | 1 | 0 | 4 | 2 | +2 | 4 | |
| 7 | Changwon | 2 | 1 | 0 | 1 | 3 | 2 | +1 | 3 | |
| 8 | Jeonbuk N | 2 | 1 | 0 | 1 | 3 | 3 | 0 | 3 | |
| 9 | Busan Transport | 1 | 0 | 1 | 0 | 1 | 1 | 0 | 1 | |
| 10 | Gangneung Citizen | 2 | 0 | 0 | 2 | 2 | 4 | −2 | 0 | |
| 11 | Gyeongju KHNP | 1 | 0 | 0 | 1 | 0 | 2 | −2 | 0 | |
| 12 | Chuncheon Citizen | 2 | 0 | 0 | 2 | 0 | 2 | −2 | 0 | |
| 13 | Mokpo | 2 | 0 | 0 | 2 | 1 | 5 | −4 | 0 | |
| 14 | Ulsan Citizen | 2 | 0 | 0 | 2 | 0 | 4 | −4 | 0 | Promotion-Relegation playoff |
| 15 | Paju Citizen | 2 | 0 | 0 | 2 | 1 | 6 | −5 | 0 | Relegation |

## Results

| Home \ Away | BTC | CW | CCC | DJK | GNC | GHC | GHC | JBB | MP | PJC | PCC | SHC | USC | YP | YJ |
| Busan Transport. | — | | | | | | | | | | | | | | 1–1 |
| Changwon | | — | | | | | | | | | | 1–2 | | | |
| Chuncheon Citizen | | | — | | | | | | | | | | | | |
| Daejeong Korail | | | | — | | 2–0 | | | | | | | 3–0 | | |
| Gangneung Citizen | | | | | — | | | | | | | | | | |
| Gyeongju KHNP | | | | | | — | | | | | | | | | |
| Gimhae City | | | | | | | — | | | | | | | | |
| Jeonbuk B | | | | | 2–1 | | 1–2 | — | | | | | | | |
| Mokpo | | 0–2 | | | | | | | — | | | | | | |
| Paju Citizen | | | | | | | | | | — | | | | | |
| Pocheon Citizen | | | | | | | | | | 3–0 | — | | | | |
| Siheung City | | | 1–0 | | | | | | | | | — | | | |
| Ulsan Citizen | | | | | | | 0–1 | | | | | | — | | |
| Yangpyeong | | | | | 2–1 | | | | | 3–1 | | | | — | |
| Yeoju | | | | | | | | | 3–1 | | | | | | — |