Wolsztyn County (Polish: powiat wolsztyński) 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 and only town is Wolsztyn, which lies 63 kilometres (39 mi) south-west of the regional capital Poznań.
The county covers an area of 680.03 square kilometres (262.6 sq mi). As of 2006 its total population is 54,718, out of which the population of Wolsztyn is 13,557 and the rural population is 41,161.
The county is subdivided into three gminas (one urban-rural and two rural). These are listed in the following table, in descending order of population.
