Abu al-Qasim Mahmud ibn Sabuktigin, usually known as Mahmud of Ghazni or Mahmud Ghaznavi, was Sultan of the Ghaznavid Empire, ruling from 998 to 1030. During his reign and in medieval sources, he is usually known by his honorific Yamin al-Dawla. At the time of his death, his kingdom had been transformed into an extensive military empire, which extended from northwestern Iran proper to the Punjab in the Indian subcontinent, Khwarazm in Transoxiana, and Makran.

Khwarazm or Chorasmia is a large oasis region on the Amu Darya river delta in western Central Asia, bordered on the north by the (former) Aral Sea, on the east by the Kyzylkum Desert, on the south by the Karakum Desert, and on the west by the Ustyurt Plateau. It was the center of the Iranian Khwarezmian civilization, and a series of kingdoms such as the Afrighid dynasty and the Anushtegin dynasty, whose capitals were Kath, Gurganj and—from the 16th century on—Khiva. Today Khwarazm belongs partly to Uzbekistan and partly to Turkmenistan.