Mulsum is a village and a former municipality in the district of Cuxhaven, in Lower Saxony, Germany. Since 1 January 2015 it is part of the municipality Wurster Nordseeküste. It is located on Wurster Landstraße, L129, between Dorum to the north-east, and Wremen to the south-west. The town is two-and-a-half miles east of the North Sea.