| Official Name: | Mazraeh-ye Khalaf |
| Native Name: | fa|مزرعه خلف |
| Settlement Type: | Village |
| Pushpin Map: | Iran |
| Subdivision Type: | Country |
| Subdivision Name: | Iran |
| Subdivision Type1: | Province |
| Subdivision Name1: | Ardabil |
| Subdivision Type2: | County |
| Subdivision Name2: | Meshgin Shahr |
| Subdivision Type3: | District |
| Subdivision Name3: | Qosabeh |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Meshgin-e Gharbi |
| Population As Of: | 2016 |
| Population Total: | 1067 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Coordinates: | 38.3725°N 47.5761°W |
| Coordinates Footnotes: | [1] |
Mazraeh-ye Khalaf (fa|مزرعه خلف) is a village in, and the capital of, Meshgin-e Gharbi Rural District of Qosabeh District, Meshgin Shahr County, Ardabil province, Iran.[2]
At the time of the 2006 National Census, the village's population was 1,144 in 268 households, when it was in the Central District.[3] The following census in 2011 counted 1,115 people in 319 households.[4] The 2016 census measured the population of the village as 1,067 people in 331 households,[5] by which time the rural district had been separated from the district in the formation of Qosabeh District.[2]