Ochakiv, also known as Ochakov, and Alektor, is a small city in Mykolaiv Raion, Mykolaiv Oblast (region) of southern Ukraine. It hosts the administration of Ochakiv urban hromada, one of the hromadas of Ukraine. Its population is 13,663.

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.