| Official Name: | Oujan |
| Native Name: | اوجان |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | South Khorasan |
| Subdivision Type2: | County |
| Subdivision Name2: | Birjand |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Central |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Shakhen |
| Population As Of: | 2016 |
| Population Total: | 834 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 33.4436°N 59.4561°W |
Oujan (Persian: اوجان, also Romanized as Owjān; also known as Ojān) is a village in Shakhen Rural District, in the Central District of Birjand County, South Khorasan Province, Iran. At the 2016 census, its population was 834, in 238 families.