The Haferberg is a hill, 580.4 m above sea level (NN),[1] in the Kaufungen Forest in Hesse and Lower Saxony in Germany.

The densely wooded Haferberg, which is the highest hill in the Münden Nature Park, is located on the border of north Hesse (Werra-Meißner district) and south Lower Saxony (Göttingen district), 1.25 km northwest of the pass of Umschwang, around 4.5 km east of Nieste and just under 4 km (all distances as the crow flies) west of Kleinalmerode.

No roads lead to the peak of the Haferberg, but it may be reached, for example by walking from the Umschwang (446 m above NN) along the Frau Holle Path.

The Rautenbach rises on the northern side of the hill and the Hungershäuser Bach to the southeast, near the Umschwang; both are western tributaries of the Werra.

The Wengebach rises southeast of the hill, also near the Umschwang, and to the west, the Endschlagbach, which are eastern and northern feeders respectively of the Fulda tributary, the Nieste.