Proleb [prɔˈle:p] is a municipality in the district of Leoben in Styria, Austria. The municipal area comprises the northern Upper Mur-valley between Leoben and Sankt Dionysen, with the valleys of the streams Prentgrabenbach, Prolebbach and Kletschbach. The river Mur is the southern border of the municipal territory. The village valley is at 500 meters above sea level. The municipal area is mostly wooded and reaches up to over 1400 meters above sea level at the Klatschbachkogel.