| Teuva | |
| Official Name: | Finnish: Teuvan kunta Swedish: Östermarks kommun |
| Other Name: | Östermark |
| Settlement Type: | Municipality |
| Coordinates: | 62.4861°N 21.7472°W |
| Subdivision Type: | Country |
| Subdivision Name: |  Finland |
| Subdivision Type1: | Region |
| Subdivision Name1: | South Ostrobothnia |
| Subdivision Type2: | Sub-region |
| Subdivision Name2: | Suupohja sub-region |
| Leader Title: | Municipal manager |
| Leader Name: | Veli Nummela |
| Established Title: | Charter |
| Established Date: | 1868 |
| Timezone: | EET |
| Utc Offset: | +02:00 |
| Timezone Dst: | EEST |
| Utc Offset Dst: | +03:00 |
| Website: | www.teuva.fi |
Teuva (sv|Östermark) is a municipality of Finland.
It is located in the South Ostrobothnia region. The population of Teuva is and the municipality covers an area of NaNTeuva}} of which NaNTeuva}} is inland water . The population density is NaNPD/km2NaNPD/km2.
The municipality is unilingually Finnish.
In August 2010, more than fifty pocket-sized saunas were gathered on a lakeside within Teuva for the fifth annual Mobile Sauna Festival. Some six-thousand visitors attended the festival, doubling the population of Teuva for the weekend.[1] [2]