Cieszyn County (Polish: powiat cieszyński) is a unit of territorial administration and local government (powiat) in Silesian Voivodeship, southern Poland, on the Czech and Slovak border.

The county's administrative seat and largest town is Cieszyn, which lies on the Czech border 62 kilometres (39 mi) south-west of the regional capital Katowice.

The bigger part of the Austrian county found in Czechoslovakia was superseded by Český Těšín District and smaller part found in Poland, was enlarged by four municipalities of the Austrian Bezirk Freistadt and more than a dozen from Bezirk Bielitz and was admitted to Silesian Voivodeship.

[2] It was then annexed by Nazi Germany at the beginning of World War II with the county known as Landkreis Teschen.

It was recreated on January 1, 1999, within Silesian Voivodeship, pursuant to the Polish local government reforms adopted in 1998.