Stefan Seidler is a Danish-German politician of the South Schleswig Voters' Association (SSW), the party representing the interests of the Danish and Frisian minority populations in Germany. He was elected to the Bundestag from Schleswig-Holstein in the 2021 German federal election. His election represented the first time the SSW won a seat since 1949. The SSW last contested a federal election in the 1961 West German election.