| Official Name: | Lusadzor / Mehdibayli |
| Native Name: | Լուսաձոր / Mehdibəyli |
| Pushpin Map: | Azerbaijan |
| Pushpin Mapsize: | 300 |
| Subdivision Type2: | Country |
| Subdivision Name2: |  Azerbaijan |
| Subdivision Type3: | District |
| Subdivision Name3: | Khojaly |
| Population Footnotes: | [1] |
| Population As Of: | 2015 |
| Population Total: | 177 |
| Timezone: | AZT |
| Utc Offset: | +4 |
| Coordinates: | 39.8931°N 46.7311°W |
| Elevation M: | 823 |
Lusadzor (hy|Լուսաձոր) or Mehdibayli (az|Mehdibəyli) is a village located in the Khojaly District of Azerbaijan, in the region of Nagorno-Karabakh. Until 2023 it was controlled by the breakaway Republic of Artsakh. The village had an ethnic Armenian-majority population[2] until the exodus of the Armenian population of Nagorno-Karabakh following the 2023 Azerbaijani offensive in Nagorno-Karabakh.[3]
The village was known as Mekhdishen (ru|Мехдишен) during the Soviet period.[4]
During the Soviet period, the village was part of the Askeran District of the Nagorno-Karabakh Autonomous Oblast.
Historical heritage sites in and around the village include a settlement, chapel-shrine and tombs from the 2nd–1st millennia BCE, as well as the 19th-century church of Surb Astvatsatsin (hy|Սուրբ Աստվածածին,).[1]
The population is mainly engaged in agriculture and animal husbandry. As of 2015, the village has a municipal building, a house of culture, a school, and a medical centre.[1]
The village has an ethnic Armenian-majority population, had 177 inhabitants in 2005,[5] and 177 inhabitants in 2015.[1]