Jäñgır-Kerei Han (Kazakh: جهانگیر کیری خان, Cyrillic: Жәңгір-Керей хан, romanized: Jäñgir-Kerey xan; 1801 – 28 July [O.S.

During his rule, he sought to establish the Horde as a modern state based on the model of the Russian Empire, and enacted a number of reforms.

He remains popularly known for his efforts to bring formal education to the Horde, but is controversial for his promotion of feudalism over nomadism, leading to Isatay Taimanov's uprising [ru] in 1836.

In addition to his reign, he also worked as a pathologist, studying anthrax extensively, and an anthropologist, recording Kazakh national epics and weaponry.

In 1839, he requested that the Orenburg Governorate send a veterinarian to the Horde, in order to educate Kazakhs on modern animal husbandry techniques, as well as a midwife to assist with obstetrics.

[4] In addition to his educational reforms, the khan established a centralised government based on the Russian Empire, including a council of advisers, a group of beys, and an administrative office.

The first was enforcing requested taxes on Kazakh nomads whose livestock grazed in neighbouring lands owned by the Bagrationi, Yusupov, and Bezborodky [ru] families, in return for receiving a portion of the payments himself.

Over a third of the Bukey Horde's population was left completely landless and forced into serfdom, and the Russian government further exacerbated problems by banning Kazakhs from settling along the coast of the Caspian Sea or along the banks of the Volga and Ural rivers.

[6] He exchanged letters with various European and Russian scientists of the time, including Alexander von Humboldt and Karl Fuchs, maintaining extensive contact with the latter from 1826 until the end of his life.

[3] He donated six manuscripts in Arabic, Persian, and Turkish to Kazan University, and additionally has been credited by the government of Kazakhstan with publishing the first written description of sharia on the territory of the Russian Empire, in 1844.

He wrote down Kazakh national epics and, with the cooperation of his family and other Borjigin relatives, secured enough ancient Mongol weaponry, as well as armour, firearms, and hunting equipment for the establishment of a museum known as "the Armoury" in Khan Ordasy.

[2] Historiography in the Soviet Union historically treated Jañgir-Kerei Khan as a negative figure due to his promotion of feudalism and his role in the 1836 uprising.