The Harle is a small river in the district of Wittmund in East Frisia, a historic region in North Germany. Its entire course is within the borough of Wittmund and it discharges near Harlesiel through a Siel, a sluice in the dyke, into the North Sea. Near the village of Willen two headstreams Nordertief and Südertief join to form the Harle.