The Ruhr (German Ruhrgebiet) is an urban and industrial area in North Rhine-Westphalia, Germany.

It may also refer to:

Ruhr (river), a river that runs through the area Ruhr (film), 2009, by director James Benning Ruhr, the German word for dysentery, an inflammatory disorder of the intestine Ruhr (A 64), a former Rhein class replenishment ship of the German Navy "Ruhr of India", valley of the Damodar River

See also Rur, a river that flows through the Netherlands, Belgium and Germany Rur (disambiguation)