| Official Name: | Ostunrash |
| Native Name: | استون رش |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | West Azerbaijan |
| Subdivision Type2: | County |
| Subdivision Name2: | Salmas |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Kuhsar |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Shepiran |
| Population As Of: | 2006 |
| Population Total: | 758 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 38.0103°N 44.4144°W |
Ostunrash (Persian: استون رش, also Romanized as Ostūnrash; also known as Sotūnrash) is a village in Shepiran Rural District, Kuhsar District, Salmas County, West Azerbaijan Province, Iran. At the 2006 census, its population was 758, in 104 families.