Yuzhnoukrainsk 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 Yuzhnoukrainsk urban hromada, one of the hromadas of Ukraine. Population: 38,560.

Mykolaiv Oblast, also referred to as Mykolaivshchyna, is an oblast (province) of Ukraine. The administrative center of the oblast is the city of Mykolaiv. At the most recent estimate, the population of the oblast stood at 1,091,821.