Szydłowiec County (Polish: powiat szydłowiecki) is a unit of territorial administration and local government (powiat) in Masovian Voivodeship, east-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 Szydłowiec, which lies 110 kilometres (68 mi) south of Warsaw.

The county covers an area of 452.22 square kilometres (174.6 sq mi).

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