Johann Santner (21 April, 1840 in Sankt Jakob in Defereggen - 21 May, 1912 in Bozen) was a Tyrolean mountaineer and first climber to reach the summit of the Santnerspitze, which was later given his name in his honor, of the Schlern on 2 July, 1880. He also was the first climber on the Gran Cir.