Chrzanów County (Polish: powiat chrzanowski) is a unit of territorial administration and local government (powiat) in Lesser Poland 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 Chrzanów, which lies 40 kilometres (25 mi) west of the regional capital Kraków.

The county covers an area of 371.49 square kilometres (143.4 sq mi).

The county is subdivided into five gminas (four urban-rural and one rural).