Pivdennoukrainsk, formerly known as Yuzhnoukrainsk (Южноукраїнськ), is a city on the Southern Bug river, in Voznesensk Raion, Mykolaiv Oblast, Ukraine, about 350 kilometers south of the capital Kyiv. It hosts the administration of Pivdennoukrainsk urban hromada, one of the hromadas of Ukraine. Population: 38,560.