| Official Name: | Kusiji |
| Native Name: | كوسيجي |
| Settlement Type: | village |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Sistan and Baluchestan |
| Subdivision Type2: | County |
| Subdivision Name2: | Mehrestan |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Central |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Birk |
| Population As Of: | 2006 |
| Population Total: | 74 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
Kusiji (Persian: كوسيجي, also Romanized as Kūsījī) is a village in Birk Rural District, in the Central District of Mehrestan County, Sistan and Baluchestan Province, Iran. At the 2006 census, its population was 74, in 15 families.