Agbarjin (also spelled Agvarjin and Akbarjin; Mongolian: Агваржин; Chinese: 阿噶多爾濟), (1423–1454) was a claimant to the throne of the Northern Yuan dynasty in 1453.
When Toghtoa Bukha attempted to eliminate Esen Taishi's influence at the court, the Oirats offered Agbarjin the throne of khaganship for his betrayal.
Even though the latter's son, Qara-qurtag Duuren taiji, persuaded his father not to accept this offer, the Oirats and Agbarjin attacked and defeated the Khagan, forcing him to flee westward.
Tayisung Khagan Toghtoa Bukha was killed by his former father-in-law Tsabdan, whose daughter Altaghana had been banished from the ordo (palace).
Soon after the death of the Tayisung Khan, Agbarjin was invited by Esen to a banquet.