The Srebarna Nature Reserve is a nature reserve in northeastern Bulgaria (Southern Dobruja), near the village of the same name, 18 km west of Silistra and 2 km south of the Danube. It comprises Lake Srebarna and its surroundings and is located on the Via Pontica, a bird migration route between Europe and Africa.
The reserve embraces 6 km² of protected area and a buffer zone of 5.4 km². The lake's depth varies from 1 to 3 m. There is a museum constructed, where a collection of stuffed species typical for the reserve is arranged.
While Lake Srebarna was studied many times in the past by foreign biologists, the first Bulgarian scientist to take an interest in the area was Aleksi Petrov, who visited the reserve in 1911. In 1913, the whole of Southern Dobrudja was incorporated in Romania, but was returned to Bulgaria in 1940, when the area was visited once again by Petrov to examine the colonies of birds that nest there.
The area was proclaimed a nature reserve in 1948 and is a Ramsar site since 1975. The reserve was recognized as World Natural Heritage Site under the 1972 Convention for the Protection of the World Cultural and Natural Heritage and included in the UNESCO World Heritage List in 1983.