Tajadin was a village in the territory of the Zangezur uezd of the former Yelizavetpol (Ganja) governorate, later in the former Gafan district, and present-day Syunik province. It was located 4 km to the northeast of the town of Gafan and on the left bank of the Baydag River.

The village was inhabited by 58 Azerbaijanis in 1897, 25 in 1926 and 32 Azerbaijanis in 1931. The village was abolished in mid–1930s. At present, it is in ruins.

The toponym was coined on the basis of a personal name.