Obertraun, Upper Austria () is a village in the Salzkammergut, a region in Austria, near the Hallstätter See (Hallstatt Lake) and Hoher Dachstein. It is a popular holiday destination with activities such as skiing and snowboarding in the winter, and mountain biking, swimming and kayaking in the summer.
Originally a part of the Duchy of Bavaria, Obertraun became part of the Duchy of Austria during the 12th century. It was occupied several times during the Napoleonic Wars. It has been part of Upper Austria since 1918, and an autonomous town since 1921 (after being part of Hallstatt).
On 15 April 1954, a teacher and fourteen students got lost on a hiking trip on a nearby mountain and all froze to death.
There is a weather station for the Dachstein Krippenstein ski area, situated at an elevation of .
In 1895 an "association for beautification of the town and advancement of tourism" was founded, and was the starting point for tourism at Obertraun. The first tourists arrived in the town that summer. In 1947 construction of the Dachstein Cablecar began.