The Turgay Plateau (; ) is a plateau in northwestern Kazakhstan. It lies 200âÂÂ300 m above sea level.
It extends some northâÂÂsouth and eastâÂÂwest. It is bisected by the Turgay Depression which is 800 km long and during the last ice age provided an outlet for the extinct West Siberian Glacial Lake.
Between the Cretaceous and Eocene, the plateau was part of the Turgai Straits or West Siberian Sea, an extension of the Tethys Sea that separated Asia from Europe.