| Official Name: | Golestanak |
| Native Name: | گلستانك |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Alborz |
| Subdivision Type2: | County |
| Subdivision Name2: | Karaj |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Central |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Mohammadabad |
| Population As Of: | 2006 |
| Population Total: | 1,468 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Coordinates: | 35.7744°N 50.8981°W |
Golestanak (Persian: گلستانك, also Romanized as Golestānak; also known as Gulistān) is a village in Mohammadabad Rural District, in the Central District of Karaj County, Alborz Province, Iran. As of the 2006 census, its population was 1,468, with there being 371 families.