Leusden is a municipality and a town in the Netherlands, in the province of Utrecht. It is located about 3 kilometres southeast of Amersfoort.
The western part of the municipality lies on the slopes of the Utrecht Hill Ridge and is largely covered by forest and heathlands. The eastern parts lie in the Gelderse Vallei and are mostly agricultural.
Former Amersfoort concentration camp lies just within the northern municipal border with Amersfoort.