| Official Name: | Chay Qushan-e Bozorg |
| Native Name: | چاي قوشان بزرگ |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Golestan |
| Subdivision Type2: | County |
| Subdivision Name2: | Gonbad-e Qabus |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Central |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Aqabad |
| Population As Of: | 2006 |
| Population Total: | 2,680 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 37.38°N 55.325°W |
Chay Qushan-e Bozorg (Persian: چاي قوشان بزرگ, also Romanized as Chāy Qūshan-e Bozorg) is a village in Aqabad Rural District, in the Central District of Gonbad-e Qabus County, Golestan Province, Iran. At the 2006 census, its population was 2,680, in 516 families.