Sokołów County (Polish: powiat sokołowski) is a powiat (a unit of territorial administration and local government in Poland) 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 largest town is Sokołów Podlaski, which lies 88 kilometres (55 mi) east of Warsaw.

The only other town in the county is Kosów Lacki, lying 23 km (14 mi) north of Sokołów Podlaski.

The county covers an area of 1,131.42 square kilometres (436.84 sq mi).