Warendorf is a Kreis (district) in the northern part of North Rhine-Westphalia, Germany. Neighboring districts are Steinfurt, Osnabrück (district), Gütersloh, Soest, district-free city Hamm, Coesfeld and the district-free city Münster.

Warendorf is a town in North Rhine-Westphalia, Germany, and capital of Warendorf District.