Back Николаевск өйәҙе (Һамар губернаһы) Bashkir Николаевский уезд (Самарская губерния) Russian Никалай өязе Tatar
Nikolayevsky Uyezd (Николаевский уезд) was one of the subdivisions of the Samara Governorate of the Russian Empire. It was situated in the central part of the governorate. Its administrative centre was Nikolayevsk (Pugachyov).