Pallars Jussà (Catalan pronunciation: [pəˈʎaz ʒuˈsa], locally: [paˈʎaz ʒuˈsa]) is a comarca (county) in Catalonia, Spain. It was established as a comarca in 1936, out of the old county of Pallars. The name means "Lower Pallars"; to the northeast and into the mountains is Pallars Sobirà. Its capital and largest municipality is Tremp.
Coordinates: 42°16′44″N 0°55′49″E / 42.27889°N 0.93028°E / 42.27889; 0.93028