Husum is a municipality in the district of Nienburg, in Lower Saxony, Germany. It lies in the northern part of the country, within the federal state of Lower Saxony, and forms part of the Nienburg district administration.
The municipality shares its name with the larger and better-known town of Husum in Schleswig-Holstein, on Germany's North Sea coast, but the two are separate places in different federal states. This Husum is the Lower Saxony community of the same name.