| Official Name: | Hartashen |
| Native Name: | Հարթաշեն |
| Pushpin Map: | Armenia#Shirak |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Name: | Armenia |
| Subdivision Type1: | Province |
| Subdivision Name1: | Shirak |
| Subdivision Type2: | Municipality |
| Subdivision Name2: | Ashotsk |
| Population As Of: | 2001 |
| Population Total: | 188 |
| Utc Offset: | +4 |
| Coordinates: | 41.0094°N 43.9228°W |
| Elevation M: | 2030 |
Hartashen (Armenian: Հարթաշեն) is a village in the Ashotsk Municipality of the Shirak Province of Armenia.
The population of the village since 1873 is as follows:
| Year | Population | |
|---|---|---|
| 1873 | 328 | |
| 1897 | 428 | |
| 1926 | 442 | |
| 1939 | 652 | |
| 1959 | 241 | |
| 1970 | 241 | |
| 1979 | 219 | |
| 2001 | 188 | |
| 2004 | 195 |