Ykkösliiga
| Founded | 2022 |
|---|---|
| First season | 2024 |
| Country | Finland |
| Confederation | UEFA |
| Number of clubs | 10 |
| Level on pyramid | 2 |
| Promotion to | Veikkausliiga (1–2 depending on the promotion play-offs) |
| Relegation to | Ykkönen (1–2 depending on the relegation play-offs) |
| Domestic cup | Finnish Cup |
| League cup | Ykkösliigacup |
| Current champions | FC Lahti (2025) |
| Most championships | KTP, FC Lahti (1) |
| Top scorer | Salomo Ojala (19) |
| Broadcaster(s) | Ruutu+ |
| Website | Ykkösliiga |
| Current: 2026 Ykkösliiga | |
| Finnish football league tiers |
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Ykkösliiga (English: "League One"; Swedish: "Ligaettan") is the second highest level of the Finnish football league system (after the Veikkausliiga), managed by the Football Association of Finland. The teams in Ykkösliiga also play a pre-season league cup, the Ykkösliigacup.
The nationwide second-tier league was first established in 1973 as I divisioona. It was later renamed Ykkönen, starting in 1994. The new and current Ykkösliiga started running in 2024, and the former second-tier Ykkönen continues as the new third-tier level.