Tarnowskie Góry County is a unit of territorial administration and local government (powiat) in Silesian Voivodeship, southern 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 Tarnowskie Góry, which lies north-west of the regional capital Katowice. The county contains three other towns: Radzionków, south of Tarnowskie Góry, Kalety, north of Tarnowskie Góry, and Miasteczko Slaskie, north-east of Tarnowskie Góry.