Yesa is a town and municipality in the province and autonomous community of Navarre, in northern Spain. It is one of the many small municipalities that make up this region of northern Spain, which lies in the western Pyrenees area bordering France.
Yesa is located in the eastern part of Navarre, near the Yesa Reservoir (Embalse de Yesa) on the Aragón River, a body of water that is one of the largest in the region and is named after the town. The municipality sits close to the historic Camino de Santiago route that crosses Navarre.