Born as Rudolf Stöger in the village of Pernegg an der Mur, Styria, in the then Austrian Empire in 1861, Stöger-Steiner's father died when he was a young boy, leading his mother to marry a then Oberleutnant in the Austrian Army, Joseph Steiner. Stöger-Steiner's stepfather, a veteran of the Danish campaign where he had been mentioned in dispatches to the Kaiser, had a profound influence on the young man's development and encouraged him to enlist in the Army.