The Dinkel is a river in Germany and the Netherlands, left tributary of the Vecht. Its total length is 93 km, of which 47 km in Germany. The Dinkel originates in North Rhine-Westphalia, Germany, between Ahaus and Coesfeld. It flows north to Gronau, crosses the border with the Netherlands (Overijssel), flows through Losser , Denekamp, and recrosses the border to Germany (Lower Saxony).