Bojnik is a town and municipality located in the Jablanica District of southern Serbia. According to 2011 census, the population of the town is 6,688 and population of the municipality was 11,073.

The Jablanica District is one of nine administrative districts of Southern and Eastern Serbia. It expands in the south-eastern parts of Serbia. As of 2022 census, the district has a population of 184,502 inhabitants. The administrative center of the district is the city of Leskovac.