HUSUM, a town in the Prussian province of Schleswig-Hol stein, in a fertile district 21 m. inland from the North sea, on the canalized Husumer Au, which forms its harbour and roadstead, 99 m. N.W. from Hamburg. Pop. (1933) 1o,861. Husum is first mentioned in 1252, and its church was built in 1431. Wisby rights were granted it in 1582, and in 1603 it received municipal privileges from the duke of Holstein. It suffered greatly from inundations in 1634 and 1717. It has communication with the North Frisian islands, and is a port for the cattle trade with Eng land. Cattle markets are held weekly, and in them, as also in cereals, a lively export trade is done. There are also extensive oyster fisheries, the property of the state, the yield during the season being very considerable. Husum is the birthplace of Theo dor Storm (1817-88), the poet, to whom a monument has been erected here.