Pervomaisk (, ; ), also known as Sokolohirsk ????????????, is a city in Luhansk Oblast, Ukraine, on the left bank of the Luhan River. Pervomaisk is located 71 km, by road, from Luhansk, 133 km from Izvaryne, where there is the de jure international border between Ukraine and Russia, and 736 km from the capital Kyiv.

Pervomaisk