Nawrūz (; died 13 August 1297) was a son of governor Arghun Aqa, and was a powerful Oirat emir of the 13th century who played an important role in the politics of the Mongol Ilkhanate. Early career He inherited his father's administrative job in Khorasan and was listed as emir and son-in-law of Abaqa in medieval chroniclers' works. He supported Arghun against Teküder in 1284 and was rewarded by being atabeg of his 13-year-old son Ghazan and Prince Kingshü (son of Jumghur) as Ghazan's subordinate in Khorasan thanks to the new kingmaker Buqa. He held this powerful position of being the autonomous de facto ruler of Khorasan until Arghun Khan's arrest of Buqa. Rebellion Hearing of the arrival of an Ilkhanate army towards Khorasan, Nawrūz led a revolt against Arghun, possibly proclaiming Hulachu (son of Hulagu) and Kingshü (who seems to have died or been executed sometime during the revolt) as new ilkhan, captured his commander Tegine Yarguchi, and banished his former ward Ghazan to Mazandaran in 1289. He gained his second victory over Prince Ghazan near Radkan, forcing him to go back to Mazandaran. In the autumn of 1289 he had to face a new army sent by Arghun under the leadership of Nurin Aqa – emir of Iraq and Prince Baydu. Being overwhelmed, Nawruz fell back to Jam and lost territories. Nawruz followed a scorching earth strategy in the winter in order to halt the advance of Ilkhan's armies, which proved effective when Baydu returned West with half of his army in 1290. Using this opportunity, Nawruz crossed the Oxus and fled the Ilkhanate. He joined Kaidu and managed to secure 30.000 soldiers from the Ögedeid retinue. He was appointed as governor of Badakhshan by Kaidu and minted coins in his name. In 1291 Nawruz invaded Khorasan with Ögedeid armies along with Sarban and Ebugen – sons of Kaidu – reaching Mashhad. Arghun's death in 1291 created more room for maneuver to Nawruz who laid siege to different parts of the province. He soon abandoned Kaidu as well, this time allying himself with Kadan's grandson Ürük Temür, giving his daughter to him in marriage and sponsoring his conversion to Islam. With a new Borjigid puppet-prince, Nawruz issued yarlighs, but this proved ineffective as well, since Ürük Temür rejoined Kaidu after a while. Losing his legitimacy, Nawruz sought to make peace with Ghazan and submitted in 1294. Rise and