Duz was a winter pasture located in the territory of the Zangazur uezd of the former Yelizavetpol (Ganja) governorate, later in the former Mehri (Meghri) district, and present-day Syunik province. It was inhabited by two Azerbaijanis in 1926. It was dissolved in 1930.

The toponym was coined on the basis of the word “duz” used in the sense of “a land without descent, ascent, hollow”, “a plain, steppe” in Azerbaijani.