Halmstad (hälmˈstädˌ) [key], city (1990 est. pop. 48,880), capital of Halland co., SW Sweden, a seaport on the Kattegat at the mouth of the Nissan River. It is an industrial center and summer resort. Manufactures include textiles, engineering, brewing, and paper, and shipbuilding is carried on. Chartered in 1307, Halmstad was an important fortified city of Denmark before being conquered by Sweden in 1645. Of note are a Gothic church (14th cent.) and a 17th-century castle.