Wismar (German pronunciation: [ˈvɪsmaʁ] ; Low German: Wismer), officially the Hanseatic City of Wismar (German: Hansestadt Wismar) is, with around 43,000 inhabitants, the sixth-largest city of the northeastern German state of Mecklenburg-Vorpommern, and the fourth-largest city of Mecklenburg after Rostock, Schwerin and Neubrandenburg. The city was the third-largest port city in former East Germany after Rostock and Stralsund.
Wismar is located on the Bay of Wismar of the Baltic Sea, directly opposite the island of Poel, that separates the Bay of Wismar from the larger Bay of Mecklenburg. The city lies in the middle between the two larger port cities of Lübeck in the west, and Rostock in the east, and the state capital of Schwerin is located south of the city on Lake Schwerin. Wismar lies in the northeastern corner of the Hamburg Metropolitan Region, and is the capital of the district of Northwestern Mecklenburg. The city's natural harbour is protected by a promontory. The uninhabited island of Walfisch, lying between Wismar and the island of Poel, administratively belongs to the borough of Wismar-Wendorf.