| 2018–19 Mestis | |
| League: | Mestis |
| Sport: | Ice hockey |
| Duration: | September 2018 – April 2019 |
| No Of Teams: | 12 |
| Season: | Regular season |
| Season Champs: | Hermes |
| Season Champ Name: | Best record |
| Second Place: | LeKi |
| Top Scorer: | Miro-Pekka Saarelainen (K-Vantaa) |
| Playoffs: | Playoffs |
| Playoffs Mvp: | Sameli Ventelä (Ketterä) |
| Finals Champ: | Ketterä |
| Finals Runner-Up: | KeuPa HT |
| Seasonslist: | List of Mestis seasons |
| Seasonslistnames: | Mestis |
| Prevseason Link: | 2017–18 Mestis season |
| Prevseason Year: | 2017–18 |
| Nextseason Link: | 2019–20 Mestis season |
| Nextseason Year: | 2019–20 |
The 2018–19 Mestis season is the 19th season of Mestis, the second highest level of ice hockey in Finland after Liiga. KOOVEE was promoted from Suomi-sarja due to Espoo United declaring bankruptcy at the end of last season.
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| Team | City | Home arena, capacity | Founded | Head coach | ||
|---|---|---|---|---|---|---|
| Hermes | Kokkola | Kokkolan jäähalli, 4,200 | 1953 |  Janne Tuunanen | ||
| IPK | Iisalmi | Kankaan jäähalli, 1,326 | align=center | 1966 | Tommi Miettinen[1] | |
| Jokipojat | Joensuu | Mehtimäki Ice Hall, 4,800 | align=center | 1953 | Jouni Varis | |
| Ketterä | Imatra | Imatra Spa Areena, 1,200 | align=center | 1957 | Maso Lehtonen | |
| KeuPa HT | Keuruu | Keuruun Jäähalli, 1,100 | align=center | 1995 | Niko Härkönen | |
| K-Vantaa | Vantaa | Trio Areena, 2,004 | align=center | 1994 | Reijo Ruotsalainen[2] | |
| KOOVEE | Tampere | Hakametsä 2, 1050 | align=center | 1929 | Juha Pajuoja | |
| LeKi | Lempäälä | Masku Areena, 800 | align=center | 1904 | Miikka Kuusela | |
| Peliitat | Heinola | Versowood Areena, 2,975 | align=center | 1984 | Vesa Petäjä[3] | |
| 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 | Marli Areena, 3,000 | align=center | 1929 | Miika Elomo |
Top eight advance to the Mestis playoffs while the bottom two face the top two teams from Suomi-sarja for a relegation playoff. Since the highest series of Finnish hockey is a closed series no team will be promoted to Liiga.
Rules for classification: 1) Points; 2) Goal difference; 3) Goals scored; 4) Head-to-head points; 5) Penalty minutes.[4]
Playoffs are being played in three stages. Each stage is a best-of-7 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 4-1.
The bottom two teams faced the top two teams from Suomi-sarja for a best-of-7 series were the winners got a place in Mestis for the next season. Peliitat and KOOVEE both won their series and thus avoided relegation.