K3 League
| Organising body | Korea Football Association |
|---|---|
| Founded | 2020 |
| Country | South Korea |
| Number of clubs | 14 |
| Level on pyramid | 3 |
| Promotion to | K League 2 |
| Relegation to | K4 League |
| Domestic cup | Korean FA Cup |
| Current champions | Gimhae FC (2025) |
| Most championships | Gimhae FC (2 titles each) |
| Broadcaster(s) | Coupang Play YouTube |
| Website | kfa.or.kr (in Korean) |
| Current: 2026 K3 League | |
The K3 League (Korean: K3리그) is the third-highest division in the South Korean football league system. It was run as an semi-professional league until 2019, but was relaunched as a professional league after absorbing the Korea National League in 2020. It is currently contested by 14 clubs in 2026 season.