Mestis
| Upcoming season or competition: 2025-26 Mestis season | |
| Formerly | I-Divisioona |
|---|---|
| Sport | Ice hockey |
| Founded | 2000 |
| Founder | Finnish Ice Hockey Association |
| First season | 2000–01 |
| Motto | Suomen viihdyttävintä lätkää (Finland’s most entertaining hockey) |
| No. of teams | 10 |
| Country | Finland |
| Most recent champion(s) | Jokerit (2024–25) |
| Most titles | Jukurit (7) |
| Broadcaster(s) | C More |
| Level on pyramid | Level 2 |
| Promotion to | SM-liiga |
| Relegation to | Suomi-sarja |
| Domestic cup(s) | Finnish Cup |
| Related competitions | Naisten Mestis |
| Official website | Mestis.fi |
Mestis (from Finnish: Mestaruussarja, meaning 'Championship series', stylized as MEST1S) is the second-highest men's ice hockey league in Finland. The league was established by the Finnish Ice Hockey Association in 2000 to replace the I-divisioona ('First Division').
Being promoted to SM-liiga is possible if a Mestis team beats a SM-liiga club in the qualification series and matches all the criteria set by the SM-liiga. Mestis, however, is an open league where relegation and promotion are possible with the 3rd league, Suomi-sarja.
Mestis is also the highest league governed by the FIHA.