| Official Name: | Kumsar |
| Native Name: | كومسار |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Gilan |
| Subdivision Type2: | County |
| Subdivision Name2: | Shaft |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Central |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Jirdeh |
| Population As Of: | 2006 |
| Population Total: | 559 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 37.0233°N 49.6197°W |
Kumsar (Persian: كومسار, also Romanized as Kūmsār; also known as Gol Sarak-e Bālā Maḩalleh, Kolasarak, Kolsarak, Kulisarak, and Kūmsarak) is a village in Jirdeh Rural District, in the Central District of Shaft County, Gilan Province, Iran. At the 2006 census, its population was 559, in 128 families.