Tuchola County (Polish: powiat tucholski) is a unit of territorial administration and local government (powiat) in Kuyavian-Pomeranian Voivodeship, north-central Poland. It came into being on 1 January 1999 as a result of the Polish local government reforms passed in 1998. Its administrative seat and only town is Tuchola, which lies 55 km (34 mi) north of Bydgoszcz and 81 km (50 mi) north-west of Toruń.
The county covers an area of 1,075.27 square kilometres (415.2 sq mi). As of 2019 its total population is 48,329 out of which the population of Tuchola is 13,621 and the rural population is 34,708.