The Yenisei Gulf (Russian: Енисейский залив, Yeniseysky zaliv) is a large and long estuary through which the lower Yenisei flows into the Kara Sea.
The Yenisei Gulf and its islands belong to the Krasnoyarsk Krai administrative division of the Russian Federation and is part of the Great Arctic State Nature Reserve, the largest nature reserve of Russia.
The Yenisey or Yenisei (/ˌjɛnɪˈseɪ/ YEN-iss-AY; Russian: Енисе́й, pronounced [jɪnʲɪˈsʲej]) is the fifth-longest river system in the world, and the largest to drain into the Arctic Ocean.
Rising in Mungaragiyn-gol in Mongolia, it follows a northerly course through Lake Baikal and the Krasnoyarsk Dam before draining into the Yenisey Gulf in the Kara Sea. The Yenisey divides the Western Siberian Plain in the west from the Central Siberian Plateau to the east; it drains a large part of central Siberia. Its delta is formed between the Gyda Peninsula and the Taymyr Peninsula.