The municipality of Brienz includes a number of communities along the upper end of Lake Brienz, and stretches into the neighboring mountains. It includes the village of Brienz on the right shore, the mouth of the Aare and the village of Kienholz to the north and the settlements of Engi and Schwendi on the left bank. Heading away from the right shore the land rises to the Rotschalp, Planalp and Giebelegg before reaching the Brienzer Rothorn (). Heading away from the left shore it rises over the Brienzerberg and Giessbach Falls, Tschingelfeld, Hinterburg and Axalp until it reaches the Schwarzhorn ().