| Official Name: | Mammaddara / Mariamadzor |
| Native Name: | Məmməddərə / Մարիամաձոր |
| Pushpin Map: | Azerbaijan |
| Pushpin Mapsize: | 300 |
| Subdivision Type: | Country |
| Subdivision Name: |  Azerbaijan |
| Subdivision Type1: | District |
| Subdivision Name1: | Khojavend |
| Population Footnotes: | [1] |
| Population As Of: | 2015 |
| Population Total: | 245 |
| Population Density Km2: | auto |
| Timezone: | AZT |
| Utc Offset: | +4 |
| Coordinates: | 39.5725°N 47.0019°W |
Mammaddara (Azerbaijani: Məmməddərə) or Mariamadzor (Armenian: Մարիամաձոր) is a village in the Khojavend District of Azerbaijan, in the disputed region of Nagorno-Karabakh. The village had an ethnic Armenian-majority population prior to the 2020 Nagorno-Karabakh war, and also had an Armenian majority in 1989.[2]
During the Soviet period, the village was part of the Hadrut District of the Nagorno-Karabakh Autonomous Oblast. 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 on 15 October 2020, during the 2020 Nagorno-Karabakh war.
Historical heritage sites in and around the village include a cemetery and khachkar from between the 16th and 19th centuries, and the church of St. Minas (Armenian: Սուրբ Մինաս|Surb Minas) built in 1601.[1]
The village had 258 inhabitants in 2005,[3] and 245 inhabitants in 2015.[1]