Mangyshlak or Mangghyshlaq Peninsula (Kazakh: Mańǵystaý túbegi; Russian: Полуостров Мангышла́к) is a large peninsula located in western Kazakhstan. It borders on the Caspian Sea in the west and with the Buzachi Peninsula, a marshy subfeature of the main peninsula, in the northeast. The Tyuleniy Archipelago lies off the northern shores of the peninsula.
The area is between desert and semidesert with a harsh continental dry climate. There are no rivers and no fresh water springs. Geologically the Mangyshlak Peninsula is part of the Ustyurt Plateau. To the north three mountain ranges are stretching across the peninsula, the North and South Aktau Range and the Mangystau Range, with the highest point reaching 555 m. Administratively the peninsula is in Kazakhstan's Mangystau Province. The largest city, and the capital of the province, is Aktau (formerly Shevchenko).
- Igor S. Zonn, Aleksey N Kosarev, Michael H. Glantz & Andrey G. Kostianoy, The Caspian Sea Encyclopedia, p. 285
- de Planhol, Xavier: (1990), CASPIAN SEA i. GEOGRAPHY, Encyclopædia Iranica. Vol.V, Fasc. 1, pp. 48-50
- Michael Khodarkovsky (1 October 2006). Where Two Worlds Met: The Russian State and the Kalmyk Nomads, 1600-1771. Cornell University Press. pp. 83–. ISBN 0-8014-7340-3.