Not to be confused with Brzesko County, which has the same name in Polish.
Brzeg County (Polish: powiat brzeski) is a unit of territorial administration and local government (powiat) in Opole Voivodeship, south-western Poland. It was created on January 1, 1999 as a result of the Local Government Reorganization Act of 1998. Its administrative seat and largest town is Brzeg, which lies 39 kilometres (24 mi) north-west of the regional capital Opole. The county also contains the towns of Grodków, lying 22 km (14 mi) south of Brzeg, and Lewin Brzeski, 17 km (11 mi) south-east of Brzeg.
The county covers an area of 876.52 square kilometres (338.4 sq mi). As of 2006 its total population is 92,361, out of which the population of Brzeg is 38,303, that of Grodków is 8,771, that of Lewin Brzeski is 5,826, and the rural population is 39,461.
The county is subdivided into six gminas (one urban, two urban-rural and three rural). These are listed in the following table, in descending order of population.