Traunstein is a Kreis (district) in the southeastern part of Bavaria, Germany. Neighboring districts are (from the north clockwise) Mühldorf, Altötting, the Austrian states Upper Austria and Salzburg, the district Berchtesgadener Land, the Austrian states of Salzburg and Tyrol, and the district Rosenheim.

Traunstein is a town in the south-eastern part of Bavaria, Germany and is the administrative center of a district by the same name. It is situated at the heart of a region called Chiemgau, approximately 11 km east of Lake Chiemsee between Munich and Salzburg, 15 km north of the Alps, and 30 km west of Salzburg. Its geographical location is .