Oleksandrivka (Ukrainian: Олександрівка) is a rural settlement in Voznesensk Raion, Mykolaiv Oblast, Ukraine.

[1] The settlement is located on the left bank of the Southern Bug, between Pivdennoukrainsk and Voznesensk (the raion center) approximately 5 kilometres (3.1 mi) north of it.

In 1923, uyezds in Ukrainian Soviet Socialist Republic were abolished, and the governorates were divided into okruhas.

[6] The town has a dam and hydroelectric power station, Oleksandrivka HES, operated by Energoatom.

The station is part of the South Ukraine Energy Complex, which includes the Tashlyk Pumped-Storage Power Plant and the South Ukraine Nuclear Power Plant in Pivdennoukrainsk.