Kleiner Jasmunder Bodden, Coastal lagoon in Vorpommern-Rügen District, Germany

Kleiner Jasmunder Bodden is a lagoon about seven kilometres long and up to five kilometres wide, covering 28.4 square kilometres. It lies between the Jasmund peninsula to the north, the Schmale Heide spit to the east and Rügen's Muttland to the south. The Pulitz peninsula juts into it from the west and is a nature reserve.

The lagoon took shape through natural coastal changes and was separated from its larger neighbor by an embankment built in 1869. This isolation created distinct conditions that shaped the body of water into what it is today.

The bodden is fished for its abundant stocks, but the Bergen sewage works discharges have advanced eutrophication. Restoration work includes the rewetted Ossen lowland near Buschvitz, now openly connected to the bodden, and plans to open the dams at Lietzow and at Stedar-Pulitz.

A 9.8-kilometre circular walk starts at Lietzow and goes right around the lagoon; it is classed as moderate and is used by hikers, runners and ornithologists. The trail is the main way to see the water and its birdlife on foot.

The water holds much less salt than the Baltic Sea because it is cut off from it and fed mainly by streams. These conditions support a specialized ecosystem that differs from what typical sea bays contain.