The Vasyugan Swamp is one of the largest swamps in the world, occupying 53,000 km² of western Siberia. The swamp is located in the Novosibirsk, Omsk, Tomsk oblasts of Russia along the left bank of the Ob River.
The swamp is a major reservoir of fresh water for the region and several rivers find their sources there. The swamp is home to a number of endangered species which is a concern among local environmentalists as the production of oil and gas has become a major industry in the region.
