Tarnobrzeg County (Polish: powiat tarnobrzeski) is a unit of territorial administration and local government (powiat) in Subcarpathian Voivodeship, south-eastern 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 520.02 square kilometres (200.8 sq mi).

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

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