Dzyarzhynsk or Dzerzhinsk, formerly known as Koydanava until 1932, is a town in Minsk Region, Belarus. It serves as the administrative center of Dzyarzhynsk District. As of 2024, it has a population of 29,796.

Minsk Region, also known as Minsk Oblast or Minsk Voblasts, is one of the six regions of Belarus. Its administrative center is Minsk, although it is a separate administrative territorial entity of Belarus. The region's population was recorded at 1,411,500 in 2011.