Kozienice County (Polish: powiat kozienicki) is a unit of territorial administration and local government (powiat) in Masovian Voivodeship, east-central Poland.

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

Its administrative seat and only town is Kozienice, which lies 81 kilometres (50 mi) south-east of Warsaw.

The county covers an area of 916.96 square kilometres (354.0 sq mi).

[1] The county includes part of the protected area called Kozienice Landscape Park.