Rügen was a Kreis (district) in the northeastern part of Mecklenburg-Vorpommern, Germany. The district of Rügen was created in 1806 by the Swedish administration of Swedish Pomerania. At first it was named Amt Bergen, in 1810 it was renamed to Kreis Bergen. On 4 September 2011, Rügen was merged to Vorpommern-Rügen.
The district was bordered entirely by the Baltic Sea. The nearest districts were Nordvorpommern and the district-free city Stralsund. The district covered the islands Rügen and Hiddensee, and several small islands like Ummanz and Vilm. It was thus the only district of Germany which consists solely of islands.