| Official Name: | Vasaj |
| Native Name: | وسج |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Hamadan |
| Subdivision Type2: | County |
| Subdivision Name2: | Nahavand |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Khezel |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Khezel-e Sharqi |
| Population As Of: | 2006 |
| Population Total: | 820 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 34.3206°N 48.2258°W |
Vasaj (Persian: وسج; also known as Vasanj, Vashāch, and Wasāch) is a village in Khezel-e Sharqi Rural District, Khezel District, Nahavand County, Hamadan Province, Iran. At the 2006 census, its population was 820, in 170 families.