The Plattberg (also Blattberg) is a mountain in the southern chain of the Ammergau Alps.

Its highest point is also called the Hochschrutte and reaches a height of 2,247 m (AA) The Plattberg lies north of Lähn and can be climbed from Lähn (railway station on the Außerfern Railway) or, on a more strenuous and trackless route from the lake of Plansee via the Wiesjoch col.

The ascent of the mountain can be done as part of a ridge walk from or to the Daniel.

The nearby peak of Großes fuitjöchl (2,196 m) is also a popular climb in winter for skiers or snowshoers.