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Ötüken (, "Ötüken forest", 𐰵𐱅𐰜𐰤:𐰘𐰼, "Ötüken jer", "Land of Ötüken", Old Uyghur: 𐰵𐱅𐰜𐰤:𐰘𐰃𐱁 "Ötüken yïš"; ) was the capital of the First Turkic Khaganate and Uyghur Khaganate. It has an important place in Turkic mythology and Tengrism. Otukan (Ötüken) is also one of the names given to Mother Earth. Otuken is located in Kharkhorin district in Övörkhangai Province of present day Mongolia.