Sos () is a village in the Khojavend 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 until the expulsion of the Armenian population of Nagorno-Karabakh by Azerbaijan following the 2023 Azerbaijani offensive in Nagorno-Karabakh.
During the Soviet period, the village was a part of the Martuni District of the Nagorno-Karabakh Autonomous Oblast.
Historical heritage sites in and around the village include Amaras Monastery (established in the 4th century, rebuilt in 1858), the 5th/6th-century St. Lusavorich monastic complex and pilgrimage site, the 19th-century St. George's Church (), and the Tevosants spring monument (1902).
The population is mainly engaged in agriculture and animal husbandry. As of 2015, the village has a municipal building, a house of culture, a secondary school, a kindergarten, three shops, and a medical centre.
The village had 1,016 inhabitants in 2005, and 1,089 inhabitants in 2015.
As of December 2025, 60 Azerbaijani families, totaling 252 individuals, have been resettled in the village by Azerbaijan.