Steinheim is a town in Höxter district in North Rhine-Westphalia, Germany.
The middle centre of Steinheim forms the economic, cultural and social hub of the Steinheimer Börde, one of the main territories of the old Prince-Bishopric of Paderborn. This territory was known as Wethi-Weizengau in Saxon times. Particularly scenic are the foothills of the Eggegebirge.