Brodnica County () is a unit of territorial administration and local government (powiat) in Kuyavian-Pomeranian Voivodeship, north-central 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 Brodnica, which lies north-east of Toruà  and east of Bydgoszcz. The county also contains the towns of Jabà Âonowo Pomorskie, lying north-west of Brodnica, and Górzno, east of Brodnica.
The county covers an area of . As of 2019, its total population is 78,935, out of which the population of Brodnica is 28,788, that of Jabà Âonowo Pomorskie is 3,754, that of Górzno is 1,366, and the rural population is 45,027.
The county includes part of the protected area known as Brodnica Landscape Park.
Brodnica County is bordered by Nowe Miasto County to the north, Dziaà Âdowo County and à »uromin County to the east, Rypin County to the south, Golub-Dobrzyà  County to the south-west, and Wàbrzeà ºno County and Grudziàdz County to the west.
The county is subdivided into 10 gminas (one urban, two urban-rural, and seven rural). These are listed in the following table, in descending order of population.
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