Grudziądz County (Polish: powiat grudziądzki) 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 covers an area of 728.39 square kilometres (281.2 sq mi).

The county is subdivided into six gminas (two urban-rural and four rural).

These are listed in the following table, in descending order of population.