Abaqa Khan (1234–1282), also Abaga, or Abagha Khan, is the second Mongol ruler (Il-khan) of the Persian Ilkhanate.

The son of Hulagu Khan and Yesuncin Khatun, he reigns from 1265–1282 and is succeeded by his brother Tekuder Khan.

Much of Abaqa's reign is consumed with civil wars in the Mongol Empire, such as those between the Ilkhanate and the northern khanate of the Golden Horde.

Abaqa also engages in unsuccessful attempts at military invasion of Syria, including the Second Battle of Homs.