Piotrków County (Polish: powiat piotrkowski) is a unit of territorial administration and local government (powiat) in Łódź Voivodeship, central Poland.

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

The only towns in Piotrków County are Sulejów, which lies 15 km (9 mi) east of Piotrków Trybunalski, and Wolbórz (classed as a town since 1 January 2011).

The county covers an area of 1,429.12 square kilometres (551.8 sq mi).

These are listed in the following table, in descending order of population.