Gniezno County () 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 Gniezno, which lies east of the regional capital Poznaà Â. The county contains four other towns: Witkowo, south-east of Gniezno, Trzemeszno, east of Gniezno, Kà Âecko, north-west of Gniezno, and Czerniejewo, south-west of Gniezno.
The county covers an area of . As of 2006 its total population is 140,333, out of which the population of Gniezno is 70,080, that of Witkowo is 7,855, that of Trzemeszno is 7,789, that of KÃ Âecko is 2,677, that of Czerniejewo is 2,556, and the rural population is 49,376.
Gniezno County is bordered by à »nin County to the north, Mogilno County to the east, Sà Âupca County to the south-east, Wrzeà Ânia County to the south, Poznaà  County to the west, and Wàgrowiec County to the north-west.
The county is subdivided into 10 gminas (one urban, four urban-rural and five rural). These are listed in the following table, in descending order of population.