| Official Name: | Nilash |
| Native Name: | نيلاش |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Gilan |
| Subdivision Type2: | County |
| Subdivision Name2: | Masal |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Shanderman |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Shanderman |
| Population As Of: | 2006 |
| Population Total: | 684 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 37.4211°N 49.0814°W |
Nilash (Persian: نيلاش, also Romanized as Nīlāsh; also known as Nīlāzh) is an Iranian village in Shanderman Rural District, Shanderman District, Masal County, Gilan Province. At the 2006 census, its population was 684, in 171 families.