The Hönne is a left tributary river to the Ruhr, flowing through the northern Sauerland hills in North Rhine-Westphalia, Germany.

The spring of the Hönne is located in the west of Neuenrade at 437m above sea level.

[2] Most notable is the narrow valley between Balve and Menden, where the Hönne has carved 60m deep into Devonian limestone.

Several caves are located in the valley, of which the Balver Höhle and the Reckenhöhle are accessible for visitors.

Some experts found signs of cannibalism in the caves (especially the Karhofhöhle) that date from 1000 to 700 BCE.