Qusajin
Qusajin 
    Persian: قوسجين  | |
|---|---|
Village  | |
| Coordinates: 37°25′39″N 48°13′57″E / 37.42750°N 48.23250°E | |
| Country | Iran | 
| Province | Ardabil | 
| County | Khalkhal | 
| District | Khvoresh Rostam | 
| Rural District | Khvoresh Rostam-e Shomali | 
| Population  (2016)  | |
 • Total  | 60 | 
| Time zone | UTC+3:30 (IRST) | 
Qusajin (Persian: قوسجين) is a village in Khvoresh Rostam-e Shomali Rural District of Khvoresh Rostam District in Khalkhal County, Ardabil province, Iran. It is located west of the Qizil Üzan river, in the Alborz (Elburz) mountain range.