| Official Name: | Hartagyugh |
| Native Name: | Հարթագյուղ |
| Pushpin Map: | Armenia |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Name: | Armenia |
| Subdivision Type1: | Province |
| Subdivision Name1: | Lori |
| Subdivision Type2: | Municipality |
| Subdivision Name2: | Spitak |
| Population As Of: | 2008 |
| Population Total: | 1,265 |
| Utc Offset: | +4 |
| Coordinates: | 40.8356°N 44.0467°W |
| Elevation M: | 1730 |
| Website: | http://bager.am/ |
Hartagyugh (Armenian: Հարթագյուղ) is a town in the Lori Province of Armenia. The village was founded in 1820 by Western Armenian immigrants. The ancestors of the inhabitants came from Basen, Mush, Erzurum, Alashkert, Van and Kars. The settlement has existed since the 4th millennium BC.
During the 1920 Turkish–Armenian war, the village (known then as Ghaltakhchi) was occupied by Turkish forces and 2,100 of its inhabitants were massacred.[1]
The population of the village since 1831 is as follows:
| Year | Population | |
|---|---|---|
| 1831 | 195 | |
| 1897 | 1,514 | |
| 1926 | 969 | |
| 1939 | 1,507 | |
| 1959 | 1,620 | |
| 1970 | 1,722 | |
| 1979 | 1,344 | |
| 2001 | 1,226 | |
| 2004 | 1,500 | |
| 2008 | 1,265 |