Post-imperial Mongolia

Northern Yuan dynasty
ᠬᠦᠮᠠᠷᠳᠦ ᠥᠨ ᠥᠯᠥᠰ Ikh Mongol Uls
1368–1635
The Northern Yuan at its greatest extent
Capital		Shangdu (1368–69) Yingchang (1369–70) Karakorum (1371–88)
Languages		Mongolian language
Religion		Shamanism, later Buddhism
Government		Monarchy
Khagan		For the full list of Mongol khans, see List of Mongol rulers.
Legislature		Yassa Customary rules
Historical era		Late middle ages
•	Expulsion of the Mongols from China proper to Mongolia	September 1368
•	The murder of Togus Temur marked the rise of the Oirats.	1388
•	Dayan Khan reunited the entire Mongol nation.	1483–1510
•	The death of the last Emperor Ligdan.	1634
•	Disestablished	1635
Area
•	1550	5,000,000 km2 (1,900,000 sq mi)
Preceded by Succeeded by Yuan dynasty Mongol Empire Four Oirat Qing dynasty Kara Del Tsardom of Russia
Today part of		Mongolia  China  Kazakhstan  Russia

The Northern Yuan dynasty, or simply the Northern Yuan, was a Mongol régime based in the Mongolian homeland. It operated after the fall of the Yuan dynasty in China in 1368 and lasted until the emergence of the Qing dynasty (founded by the Manchus) in the 17th century. The Northern Yuan dynasty began with the end of Mongol rule in China and the retreat of the Mongols to the Mongolian steppe. This period featured factional struggles and the (often only nominal) role of the Great Khan.

Dayan Khan and Mandukhai Khatun reunited the entire Mongol nation in the 15th century. However, the former's distribution of his empire among his sons and relatives as fiefs caused the decentralization of the imperial rule. Despite this decentralization, a remarkable concord continued within the Dayan Khanid aristocracy, and intra-Chinggisid civil war remained unknown until the reign of Ligdan Khan (1604–34), who saw much of his power weakened in his quarrels with the Mongol tribes and was defeated by the Manchus. The last sixty years of this period featured the intensive penetration of Tibetan Buddhism into Mongolian society.

The period is known by various names, including the Northern Yuan dynasty, or simply the Northern Yuan, although it sometimes refers to the period before 1388, when Toghus Temur was murdered near the Tuul River. The term "Northern Yuan" is derived from the corresponding term (北元) in the Chinese language. The Mongols held the name "Great Yuan" in the early period of this dynasty as in the earlier Yuan dynasty, but they stopped claiming the title Great Yuan since the 15th century except during the reigns of for example Dayan Khan. However, in the English language the term "Northern Yuan (dynasty)" is still used to cover the whole period for historiography reasons. Apart from the name "Great Yuan" in the early period, the Mongols called their nation Ikh Mongol Uls, meaning the "Great Mongol State". It is also referred to as the Post-Imperial Mongolia, Mongol Khaganate, Mongolian Khaganate, Mongol Khanate or Mongolian Khanate in some modern sources, although most of these English terms can also refer to the Mongol Empire or the Yuan dynasty in the 13th and the 14th centuries. In Mongolian chronicles this period is also known as The Forty and the Four, meaning forty tumen eastern Mongols (Eastern Mongolia) and four tumen Western Mongols. Furthermore, Mongolian historiography also use the term "Period of political disunion" and "Period of small khagans" etc.