Bijar County () is in Kurdistan province, Iran. Its capital is the city of Bijar.
After the 2011 National Census, the villages of Pir Taj and Tup Aghaj were elevated to city status.
The people of the county are Kurds and speak Kurdish.
At the time of the 2006 census, the county's population was 95,461 in 23,614 households. The following census in 2011 counted 93,714 people in 26,068 households. The 2016 census measured the population of the county as 89,162 in 27,759 households.
Bijar County's population history and administrative structure over three consecutive censuses are shown in the following table.
The following is a list of notable places om Bijar County: