Leżajsk County (powiat leżajski) 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. Its administrative seat and largest town is Leżajsk, which lies 41 km north-east of the regional capital Rzeszów. The only other town in the county is Nowa Sarzyna, lying 11 km north-west of Leżajsk.
The county covers an area of 583.01 km2. As of 2019 its total population is 69,479, of which the population of Leżajsk is 13,853, that of Nowa Sarzyna is 5,834, and the rural population is 49,792.
Leżajsk County is bordered by Biłgoraj County to the north-east, Przeworsk County and Łańcut County to the south, Rzeszów County to the south-west, and Nisko County to the north-west.
