Chapni 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. The provincial centre lies 13 km to the northeast of the town of Gapan, and at a height of 1,050 m above sea level. The settlement was integrated into the administrative area of Armenia after the establishment of the Zangezur uezd in Soviet Armenia on 31 August 1921. It was marked on the five-verst map of the Caucasus.

The village was initially inhabited by Azerbaijanis who gradually left it after Armenians had been settled in the region.

The toponym was coined on the basis of the ethnonym “Chapni” of the Old Oghuz tribe. The name of one of the Gizilbash tribes is also “Chapni”.

In official documents it is written as “Chapni”. 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°16’ N., longitude: 46°27’ E.