Brodnica County (Polish: powiat brodnicki) 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.

The county also contains the towns of Jabłonowo Pomorskie, lying 23 km (14 mi) north-west of Brodnica, and Górzno, 18 km (11 mi) east of Brodnica.

The county covers an area of 1,038.79 square kilometres (401.1 sq mi).

The county includes part of the protected area known as Brodnica Landscape Park.