Weisen is a municipality in the Prignitz district, in Brandenburg, Germany.
The south border of Weisen is marked by the Stepenitz river with the municipality of Breese on the other side.
The village of Schilde constitutes the northern part of the municipality of Weisen.
The German federal highway 189 crosses between the villages Weisen and Schilde.
Parts of the municipality belong to the UNESCO biosphere reserve Elbe river landscape.