Harburg is a district (Landkreis) in Lower Saxony, Germany. It takes its name from the town of Harburg upon Elbe, which used to be the capital of the district but is now part of Hamburg. It is bounded by (from the east and clockwise) the districts of Lüneburg, Heidekreis, Rotenburg and Stade, by the City of Hamburg and the State of Schleswig-Holstein (District of Lauenburg).