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.