Bieruń-Lędziny County (Polish: powiat bieruńsko-lędziński) is a unit of territorial administration and local government (powiat) in Silesian Voivodeship, southern Poland.

It came into being on January 1, 1999, as a result of the Polish local government reforms passed in 1998.

Its administrative seat and largest town is Bieruń, which lies 15 kilometres (9 mi) south-east of the regional capital Katowice.

The county also contains the towns of Lędziny, lying 2 km (1 mi) south-east of Bieruń, and Imielin, 7 km (4 mi) east of Bieruń.

The county covers an area of 156.68 square kilometres (60.5 sq mi).