Nowa Sól County (Polish: powiat nowosolski) is a unit of territorial administration and local government (powiat) in Lubusz Voivodeship, western 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 Nowa Sól, which lies 22 km (14 mi) south-east of Zielona Góra and 109 km (68 mi) south of Gorzów Wielkopolski. The county contains three other towns: Kożuchów, lying 10 km (6 mi) south-west of Nowa Sól, Bytom Odrzański, lying 11 km (7 mi) south-east of Nowa Sól, and Nowe Miasteczko, 13 km (8 mi) south of Nowa Sól.
The county covers an area of 770.58 square kilometres (297.5 sq mi). As of 2019 its total population is 86,384. The most populated towns are Nowa Sól with 38,763 inhabitants and Kożuchów with 9,432 inhabitants.
The county is subdivided into eight gminas (one urban, three urban-rural and four rural). These are listed in the following table, in descending order of population.
