Haqnazar Haider Sultan bin Qasim Khan (), commonly known as Haqnazar Khan, was the khan of the Kazakh khanate from 1538-1580. He was the second-oldest son of Kasim Khan and the younger brother of Muhammed Khan.
The Kazakh Khanate saw a revival under the leadership of Haqnazar, whose rule lasted for more than 40 years. During Haqnazar's reign, the Kazakh Khanate began to regain its former power achieved during the time of Kasym Khan. Haqnazar Khan united the scattered inhabitants of the steppe from the former Kazakh Khanate after the 1520s.
Haqnazar also known as Haqq-Nazar or Khaknazar Khan or Ak Nazar Khan, was the son of Kasym Khan and Khanik Sultan Khanim. Haqnazar lived during the reign of Taiyr Khan and Buidash Khan under one of the Nogai princes.
Haqnazar's name comes from the Arabic word "àðÃÂ", which means "truth, correctness" and the Turko-Persian word "Nazar," which means "vision". For much of his early life, Haqnazar was simply called by his middle name "Haider", which was given to him in honor of Kasñm Khan's Shaybanid uncle, Sheikh Haidar. He only went by "Haqnazar" after succeeding Ahmed Khan and Toghym Khan as the ruler of the Kazakhs.
Haqnazar had assisted Taiyr Khan and Tugim Khan during the First Kazakh Civil War. However as Taiyr Khan died on Kyrgyzstan, and Tugim died in 1538, Haqnazar assumed the title Khan and captured Ahmed Khan's territories in the east to capturing Buydash Khan's territories in the east. This ended in victory of Haqnazar and his ruling nation of Kazakh Khanate faced competition from several directions: the Nogai Horde in the west, the Khanate of Sibir in the north, Moghulistan in the east and the Khanate of Bukhara in the south.
Haqnazar Khan began to liberate the occupied Kazakh lands. He returned the northern regions of Saryarka to the Kazakh Khanate. Having begun a campaign against the Nogai Horde, Haqnazar reconquered Saray-Juk from the Nogai Horde and the surrounding Kazakh territories as well. In the fight against the Khivan Khanate, the Kazakhs conquered the Mangyshlak Peninsula. Haqnazar began a campaign against Moghulistan to incorporate Jetisu into the Kazakh Khanate. The campaign ended with defeat with the Oirats joining the war in favor of Moghulistan and resulted in victory for Moghulistan. However, in the north, there was a threat from the Khanate of Sibir, led by Kuchum Khan. Kuchum was soon defeated and Haqnazar reunited the Kazakh tribes and became the sole ruler of the Kazakh Khanate, the first to do so since Taiyr Khan. In doing so, Haqnazar was bestowed with the title "Shah-i-Turan" (Persian for "King of Turan").
In 1570, Haqnazar defeated the Nogai Horde at the Battle of Emba reached Astrakhan, but were repelled by Russian forces.