Siznak is a village in the Zangezur uezd of the former Yelizavetpol (Ganja) governorate, later in the former Gafan district, and currently in the Syunik province. It is located on the left bank of the Okchu River, at a height of 760 m above sea level. After the establishment of Zangezur uezd in Soviet Armenia on 31 August 1921, the settlement was included in the administrative territory of Armenia.

The village was inhabited by 179 Azerbaijanis in 1897, and 180 Azerbaijanis in 1904. In 1918 the Azerbaijanis were massacred or deported by Armenian armed units. After the establishment of Soviet power in the territory of present-day Armenia, some of the villagers returned to the village. The village was inhabited by 76 Azerbaijanis in 1922, 121 in 1931, 409 in 1959, and 432 Azerbaijanis in 1979. In late November 1988 the Azerbaijanis were completely deported by the state of Armenia. At present, only Armenians live there.

The toponym was coined by adding suffix “-nak” to the word “sis” used to mean “a fog, mist” in Azerbaijani. The word “sis” has acquired the form of “siz” in the toponym “siznak”.

Currently, the name of the settlement in the official documents in Armenian is given as “Sznak”. According to the law “On the administrative-territorial division of the Republic of Armenia” dated 7 November 1995, it was integrated into the administrative area of the Syunik province.

Geographic coordinates: Latitude 39°13’ N., longitude 46°28’ E.