| Evijärvi | |
| Official Name: | Finnish: Evijärven kunta Swedish: Evijärvi kommun |
| Settlement Type: | Municipality |
| Coordinates: | 63.3667°N 51.5°W |
| Subdivision Type: | Country |
| Subdivision Name: |  Finland |
| Subdivision Type1: | Region |
| Subdivision Name1: | Southern Ostrobothnia |
| Subdivision Type2: | Sub-region |
| Subdivision Name2: | Järviseutu sub-region |
| Leader Title: | Municipal manager |
| Leader Name: | Mikko Huhtala |
| Established Title: | Charter |
| Established Date: | 1867 |
| Timezone: | EET |
| Utc Offset: | +02:00 |
| Timezone Dst: | EEST |
| Utc Offset Dst: | +03:00 |
Evijärvi is a municipality of Finland. It is located in the Southern Ostrobothnia region. The municipality has a population of and covers an area of NaNEvijärvi}} of which NaNEvijärvi}} is water. The population density is NaNEvijärvi.
Neighbouring municipalities are Kauhava, Kronoby, Lappajärvi, Pedersöre and Veteli.
The municipality is unilingually Finnish.