The Anushtegin dynasty or Anushteginids, also known as the Khwarazmian dynasty was a Sunni Muslim dynasty of Turkic mamluk origin from the Bekdili clan of the Oghuz Turks. The Anushteginid dynasty ruled the Khwarazmian Empire, consisting in large parts of present-day Central Asia, Afghanistan and Iran in the approximate period of 1077 to 1231, first as vassals of the Seljuks and the Qara Khitai, and later as independent rulers, up until the Mongol conquest of the Khwarazmian Empire in the 13th century.