| Official Name: | Yek Langi |
| Native Name: | يك لنگي |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Isfahan |
| Subdivision Type2: | County |
| Subdivision Name2: | Isfahan |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Kuhpayeh |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Sistan |
| Population As Of: | 2006 |
| Population Total: | 212 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 32.7158°N 52.0925°W |
Yek Langi (Persian: يك لنگي, also Romanized as Yek Langī, Yak Lengī, and Yek Lengī; also known as Ek Langi) is a village in Sistan Rural District, Kuhpayeh District, Isfahan County, Isfahan Province, Iran. At the 2006 census, its population was 212, in 56 families.