Sos (Armenian: Սոս) is a village in the Khojavend District of Azerbaijan, in the disputed 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 exodus of the Armenian population of Nagorno-Karabakh 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 (Armenian: Սուրբ Գևորգ եկեղեցի, romanized: Surb Gevorg Yekeghetsi), 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.

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• Sos, Nagorno-Karabakh at GEOnet Names Server
• A short documentary about the village on YouTube