Jasło County (powiat jasielski) is a unit of territorial administration and local government (powiat) in Subcarpathian Voivodeship, south-eastern Poland, on the Slovak border. It came into being on January 1, 1999, as a result of the Polish local government reforms passed in 1998. Its administrative seat is Jasło, which lies 50 km south-west of the regional capital Rzeszów. The only other town in the county is Kołaczyce, which is 8 km north of Jasło.
The county covers an area of 830.41 km2. As of 2019 its total population was 113,730, out of which the population of Jasło was 35,063, that of Jasło was 1,409, and the rural population was 77,258.
Jasło County is bordered by Gorlice County to the west, Tarnów County to the north-west, Dębica County to the north, Strzyżów County to the north-east and Krosno County to the east. It also borders Slovakia to the south.
