| Official Name: | Tumachlar |
| Native Name: | توماچلار |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Golestan |
| Subdivision Type2: | County |
| Subdivision Name2: | Torkaman |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Gomishan |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Jafarbay-ye Gharbi |
| Population As Of: | 2006 |
| Population Total: | 457 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 36.9861°N 54.0606°W |
Tumachlar (Persian: توماچلار, also Romanized as Tūmāchlar; also known as Tūmīāchlar Khvājeh Nafas) is a village in Jafarbay-ye Gharbi Rural District, Gomishan District, Torkaman County, Golestan Province, Iran. At the 2006 census, its population was 457, in 89 families.