Vayots Dzor is a province (marz) of Armenia. It lies at the southeastern end of the country, bordering the Nakhchivan exclave of Azerbaijan to the west and the Kalbajar District of Azerbaijan to the east. It covers an area of 2,308 km2 (891 sq mi). With a population of only 52,324, it is the most sparsely populated province in the country. The capital and largest city of the province is the town of Yeghegnadzor.

Kalbajar District is one of the 66 districts of Azerbaijan. It is located in the west of the country and belongs to the East Zangezur Economic Region. The district borders the districts of Lachin, Khojaly, Agdam, Tartar, Goranboy, Goygol and Dashkasan districts of Azerbaijan, as well as the Gegharkunik and Vayots Dzor provinces of Armenia. Its capital and largest city is Kalbajar. As of 2020, the district had a nominal population of 94,100.