Radomir Municipality () is a municipality in the Pernik Province of Bulgaria.
At the 2011 census, the population of Radomir was 20,896. Most of the inhabitants were Bulgarians (88.47%) with a minority of Gypsies/Romani (4.27%). 6.94% of the population's ethnicity was unknown.
In addition to the capital town of Radomir, there are 31 villages in the municipality: