| Official Name: | Lonbar |
| Native Name: | fa|لنبر |
| Settlement Type: | Village |
| Pushpin Map: | Iran |
| Subdivision Type: | Country |
| Subdivision Name: | Iran |
| Subdivision Type1: | Province |
| Subdivision Name1: | Ardabil |
| Subdivision Type2: | County |
| Subdivision Name2: | Khalkhal |
| Subdivision Type3: | District |
| Subdivision Name3: | Central |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Sanjabad-e Sharqi |
| Population As Of: | 2016 |
| Population Total: | 921 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Coordinates: | 37.7439°N 48.5231°W |
| Coordinates Footnotes: | [1] |
Lonbar (fa|لنبر) is a village about 100km (100miles) from the Caspian Sea. In northwestern Iran, it is the capital of Sanjabad-e Sharqi Rural District of the Central District of Khalkhal County, Ardabil province.[2]
At the time of the 2006 National Census, the village's population was 1,498 in 343 households.[3] The following census in 2011 counted 1,309 people in 345 households.[4] The 2016 census measured the population of the village as 921 people in 285 households. It was the most populous village in its rural district.[5]