Oborniki County (powiat obornicki) is a unit of territorial administration and local government (powiat) in Greater Poland Voivodeship, west-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 Oborniki, which lies 29 km north of the regional capital Poznań. The only other town in the county is Rogoźno, lying 17 km north-east of Oborniki.
The county covers an area of 712.65 km2. As of 2006 its total population is 55,976, out of which the population of Oborniki is 17,850, that of Rogoźno is 10,905, and the rural population is 27,221.
Oborniki County is bordered by Czarnków-Trzcianka County and Chodzież County to the north, Wągrowiec County to the east, Poznań County to the south, and Szamotuły County to the west.
