Pleszew County (Polish: powiat pleszewski) is a unit of territorial administration and local government (powiat) in Greater Poland Voivodeship, west-central Poland.

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

Its administrative seat is the town of Pleszew, which lies 83 kilometres (52 mi) south-east of the regional capital Poznań.

The county covers an area of 711.91 square kilometres (274.9 sq mi).

The county is subdivided into six gminas (three urban-rural and three rural).