| Official Name: | Dizajin |
| Native Name: | ديزجين |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Qazvin |
| Subdivision Type2: | County |
| Subdivision Name2: | Qazvin |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Tarom Sofla |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Khandan |
| Population As Of: | 2006 |
| Population Total: | 56 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 36.6456°N 49.0683°W |
Dizajin (Persian: ديزجين, also Romanized as Dīzajīn, Dīzeh Jīn, Dizadzhin, Dīzahjīn, Dīzejīn, and Dizjin) is a village in Khandan Rural District, Tarom Sofla District, Qazvin County, Qazvin Province, Iran. At the 2006 census, its population was 56, in 22 families.