Until 1 January 2007 Skælskør Municipality was a municipality in the former West Zealand County, on the southwestern coast of the island of Zealand, in eastern Denmark. The municipality covered an area of 170.02 km2, and had a total population of 11,928. Its last mayor was Hans Ole Drost, a member of the Venstre. Skælskør Municipality bordered Korsør and Hashøj Municipality to the north and Fuglebjerg Municipality to the east. The municipality included the islands of Agersø, Omø and Glænø.