Eckernförde Bay (; ) is a
Förde in
Schleswig-Holstein,
Germany. It is about 16 km long and turns at the mouth, with the south bank on approximately ten km of the
Bay of Kiel. The border with
Kiel Fjord is at Bülker lighthouse. The once forested peninsula between Kiel Fjord and Eckernförde Bay formed the borderland between the
Saxons and the
Danes in the
Middle Ages and was termed the Danish Wold. North of Eckernförde Bay is the peninsula
Schwansen. At the end of the bay is the city of
Eckernförde.