| Akhullu / Hartashen | |
| Native Name: | Axullu / Հարթաշեն |
| Pushpin Map: | Azerbaijan#Karabakh |
| Pushpin Mapsize: | 300 |
| Subdivision Type: | Country |
| Subdivision Name: |  Azerbaijan |
| Subdivision Type1: | District |
| Subdivision Name1: | Khojavend |
| Population Footnotes: | [1] |
| Population As Of: | 2015 |
| Population Total: | 91 |
| Timezone: | AZT |
| Utc Offset: | +4 |
| Coordinates: | 39.5667°N 47.0922°W |
Akhullu (Azerbaijani: Axullu; Armenian: Հախլլու|Hakhlu) or Hartashen (Armenian: Հարթաշեն) is a village in the Khojavend District of Azerbaijan, in the disputed region of Nagorno-Karabakh. The village had an Azerbaijani-majority population prior to their expulsion during the First Nagorno-Karabakh War.[2]
During the Soviet period, the village was part of the Hadrut District of the Nagorno-Karabakh Autonomous Oblast. Before the Nagorno-Karabakh conflict, the village was inhabited by about 600 Azerbaijanis. On 8 January 1992, the Azerbaijani inhabitants of the village were forced to leave Akhullu due to shelling by the Armenian forces.[3] During the First Nagorno-Karabakh War, the village came under the control of Armenian forces, on 2 October 1992.[4] After the First Nagorno-Karabakh War, the village was administrated as part of the Hadrut Province of the breakaway Republic of Artsakh. The village came under the control of Azerbaijan during the 2020 Nagorno-Karabakh war.
Historical heritage sites in and around the village include a cemetery from between the 17th and 19th centuries.[1]
The village had about 600 inhabitants, mostly Azerbaijani, during the Soviet period. After the First Nagorno-Karabakh war, the Azerbaijani inhabitants of the village were forced to leave the village. 101 inhabitants in 2005,[5] and 91 inhabitants in 2015.[1]