| Official Name: | Sheykh Mahmud |
| Native Name: | شيخ محمود |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Chaharmahal and Bakhtiari |
| Subdivision Type2: | County |
| Subdivision Name2: | Ardal |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Central |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Poshtkuh |
| Population As Of: | 2006 |
| Population Total: | 348 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 31.9844°N 50.6186°W |
Sheykh Mahmud (Persian: شيخ محمود, also Romanized as Sheykh Maḩmūd) is a village in Poshtkuh Rural District, in the Central District of Ardal County, Chaharmahal and Bakhtiari Province, Iran. At the 2006 census, its population was 348, in 81 families.