Abgaz was a village in the territory of the Zangezur uezd of the former Yelizavetpol (Ganja) governorate, later in the former Mehri (Meghri) district, and present-day Syunik province. It was located 14 km to the north of the village of Aldere. In the 1930s the inhabitants were resettled in the district centre and the village of Hamravar, and the village was abolished. At present, the village lies in ruins.

The toponym was coined by combining the words “ab” meaning “water” in Persian and “gaz” meaning “a pass, a narrow passing in a plateau; a saddle on the ridge of the mountain, a depression in the mountain peak” in Azerbaijani.