Tümen Zasagt Khan

For the Khalkha khanate, see Zasagt Khan.

Zasagt Khan 扎薩克圖汗 ᠵᠠᠰᠠᠭᠲᠤ ᠬᠠᠭᠠᠨ
Khagan of the Mongols
Khagan of the Northern Yuan dynasty
Reign	1558–1592
Predecessor	Darayisung Gödeng Khan
Successor	Buyan Sechen Khan
Born	1539 Outer Mongolia
Died	1592 (aged 52–53) Outer Mongolia
Names Tümen
House	Borjigin
Dynasty	Northern Yuan
Father	Darayisung Gödeng Khan
Religion	Tibetan Buddhism

Zasagt Khan (Mongolian: Засагт хаан; Chinese: 扎薩克圖汗), born Tümen (Mongolian: Түмэн; Chinese: 圖們) (1539–1592), was a khagan of the Northern Yuan dynasty, reigning from 1558 until his death in 1592. He succeeded Darayisung Gödeng Khan and ruled directly over the Chahar. During his reign, the Mongols conquered the Daur and Evenk tribes.

Zasagt Khan was the first of three sons of Darayisung Gödeng Khan. His authority was validated by Altan Khan, and he later coordinated Altan's actions to win over the Uriyangkhai and Daur Mongols. His relatives, Abtai Khan and Khutughtai Sechen Khung Taiji, brought a significant portion of the Four Oirats back into the Mongol fold. In addition to conducting successful raids against the Ming dynasty, Zasagt Khan conquered Koko Nur and appointed his son as its ruler.

In 1576, Zasagt Khan and other Mongol princes adopted Tibetan Buddhism after being converted by Ilduni Sanggiduktshi Garma Lama. He assembled the Six Tumens and initiated legal reforms. He compiled a new code of law reportedly based on the Yekhe Zasag of Genghis Khan, earning him the title Jasagtu ("law-giver"). He made peace with the Right Wing Tumens and conferred official titles upon their leaders. He also compelled three Jurchen tribes in Manchuria, including the Jurjis and the Yekhe Tungusians, to pay tribute.

Zasagt Khan died in 1592.

See also

• List of khans of the Northern Yuan dynasty