The Lehrde is a 32 km (20 mi) long, right tributary of the river Aller in Lower Saxony, Germany.
It rises east of Kettenburg, a borough of Visselhövede, in the Öttinger Ochsenmoor nature reserve. It then heads westward, crossing the district of Heidekreis, passing the villages of Stellichte (part of Walsrode) and Lehrden. The Lehrde continues across the southern part of the district of Verden. Northeast of Wittlohe (part of Kirchlinteln) it is joined from the left by the Vethbach and discharges south of Hohenaverbergen (part of Kirchlinteln) into the Aller.
The setting for the fairy tale of the Town Musicians of Bremen is along part of the river Lehrde.