Poręby Furmańskie [pɔˈrɛmbɨ furˈmaɲskʲɛ] is a village in the administrative district of Gmina Grębów, within Tarnobrzeg County, Subcarpathian Voivodeship, in south-eastern Poland. It lies approximately 5 kilometres (3 mi) north-west of Grębów, 11 km (7 mi) east of Tarnobrzeg, and 65 km (40 mi) north of the regional capital Rzeszów.

In 1975–1998, the town administratively belonged to the Tarnobrzeg Voivodeship.