Nowe Miasto County (Polish: powiat nowomiejski) is a unit of territorial administration and local government (powiat) in Warmian-Masurian Voivodeship, northern 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 only town is Nowe Miasto Lubawskie, which lies 73 kilometres (45 mi) south-west of the regional capital Olsztyn.