| 2020–21 Mestis | |
| League: | Mestis |
| Sport: | Ice hockey |
| Duration: | September 2020 – April 2021 |
| No Of Teams: | 14 |
| Season: | Regular season |
| Season Champs: | K-Espoo |
| Season Champ Name: | Best record |
| Second Place: | JoKP |
| Top Scorer: | Joonas Larinmaa (KeuPa HT) |
| Playoffs: | Playoffs |
| Playoffs Mvp: | Marlo Koponen (Ketterä) |
| Finals Champ: | Ketterä |
| Finals Runner-Up: | Hermes |
| Seasonslist: | List of Mestis seasons |
| Seasonslistnames: | Mestis |
| Prevseason Link: | 2019–20 Mestis season |
| Prevseason Year: | 2019–20 |
| Nextseason Link: | 2021–22 Mestis season |
| Nextseason Year: | 2021–22 |
The 2020–21 Mestis season was the 21st season of Mestis, the second highest level of ice hockey in Finland after Liiga. Due to promotion/relegation games being cancelled due to COVID-19 pandemic in the last season both semi-finalists from last seasons Suomi-sarja (K-Espoo and FPS) were promoted to Mestis. Therefore, this seasons consisted of 14 teams.[1]
| Team | City | Home arena, capacity | Founded | Head coach | ||
|---|---|---|---|---|---|---|
| FPS | Forssa | Forssa Ice Hall, 3,000 | 1931 |  Asko Rantanen | ||
| Hermes | Kokkola | Kokkolan jäähalli, 4,200 | 1953 | Jere Härkälä | ||
| Hokki | Kajaani | Kajaanin jäähalli, 2,372 | 1968 | Niko Eronen | ||
| IPK | Iisalmi | Kankaan jäähalli, 1,358 | align=center | 1966 | Niko Härkönen | |
| JoKP | Joensuu | PKS Areena, 4,800 | align=center | 1953 | Benjamin Laurinkari | |
| Ketterä | Imatra | Imatra Spa Areena, 1,200 | align=center | 1957 | Maso Lehtonen | |
| KeuPa HT | Keuruu | Keuruun Jäähalli, 1,100 | align=center | 1995 | Tomas Westerlund | |
| K-Espoo | Espoo | Espoo Metro Areena, 6,982 | align=center | 2018 | Janne Tuunanen | |
| K-Vantaa | Vantaa | Trio Areena, 2,004 | align=center | 1994 | Mika Niskanen | |
| KOOVEE | Tampere | Tampere Ice Stadium, 7,300 | align=center | 1929 | Juuso Hahl | |
| Peliitat | Heinola | Versowood Areena, 2,686 | align=center | 1984 | Vesa Petäjä | |
| RoKi | Rovaniemi | Lappi Areena, 3,500 | align=center | 1979 | Santeri Immonen | |
| SaPKo | Savonlinna | Talvisalo ice rink, 2,833 | align=center | 1929 | Pasi Räsänen | |
| TUTO Hockey | Turku | Kupittaan jäähalli, 3,000 | align=center | 1929 | Antti Virtanen |
Initially the plan was to have each team play 50 games in total but due to the season being on hold from 2 December 2020 to 10 February 2021 the teams were unable to play the full season.[2] [3] Due to this points-per-game determines the order of the teams. SaPKo and RoKi decided not to continue the season when it resumed in February 2021.[4]
Top six advanced straight to the quarter-finals, while teams between 7th and 10th positions played a wild card round for the final two spots. Since the highest series of Finnish hockey is a closed series no team will be promoted to Liiga.
Playoffs are being played in four stages. Each stage before the final is a best-of-3 series, with the final being a best-of-5 series. The teams are reseeded after the quarterfinals, so that the best team by regular season performance to make the semifinals faces the worst team in the semifinals.
Ketterä wins the finals 3–2.