Schiedam (skhē´däm´), city (1994 pop. 72,515), South Holland prov., W Netherlands, on the Nieuwe Maas (New Meuse) River, near Rotterdam. It is famous for its gin, which is widely exported. There are also shipyards and factories that manufacture chemicals, glass, and lumber. The city's noteworthy structures include a 14th-century church, the 16th-century town hall, and the ruins of a 13th-century castle.