Lake Überlingen (Standard German of Germany: Überlinger See, Swiss Standard German: Überlingersee) is the northwestern "finger" of the Obersee, the lower part of Lake Constance. The boundary of lake is defined as the ferry link from Meersburg to Constance. It extends north to Bodman-Ludwigshafen.
In contrast to the main south-eastern part of the Upper Lake, which is a condominium, Lake Überlingen is considered German territory.