Klanxbüll is a municipality located on the mainland in the northwestern corner of Schleswig-Holstein, a state in northern Germany. It is situated within the district of Kreis Nordfriesland and serves as part of the Amt Südtondern administrative collective.
The municipality is characterized by its geographic position in the coastal region of the country. As a rural settlement in the northwest, it maintains a distinct regional identity within the Schleswig-Holstein landscape.