Obertauern lies in the southeast of the state of Salzburg in the Radstädter Tauern mountains at heights of between 1,630 and 2,526 metres above sea level. The village is near to the highest point of the Radstädter Tauern Pass over which the Katschberg road (Katschberger Straße, the B 99) runs. Obertauern belongs to two districts: St. Johann/Pongau and Tamsweg, hence why the community is separated into the two municipalities of Untertauern (Pongau) and Tweng (Lungau). The municipal boundary runs at the height of the pass and hence through the centre of the village.