Lubaczów County (Polish: powiat lubaczowski) is a unit of territorial administration and local government (powiat) in Subcarpathian Voivodeship, south-eastern Poland, on the border with Ukraine.

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 Lubaczów, which lies 81 kilometres (50 mi) east of the regional capital Rzeszów.

The county covers an area of 1,308.37 square kilometres (505.2 sq mi).

The county is subdivided into eight gminas (one urban, three urban-rural and four rural).