Białystok County (Polish: powiat białostocki) is a unit of territorial administration and local government (powiat) in Podlaskie Voivodeship, north-eastern Poland, on the border with Belarus.

It was created on 1 January 1999 as a result of the Polish local government reforms passed in 1998.

The county is subdivided into 15 gminas (nine urban-rural and six rural).

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

This Białystok County location article is a stub.