Empress Lý Chiêu Hoàng cedes the throne to her husband Trần Cảnh (Trần Thái Tông), founding the Trần dynasty under the regency of Trần Thủ Độ.
Tai leaders break from Khmer control and found Sukhothai, often regarded as the first Thai kingdom.
Mongol forces under Uriyangqadai occupy Thăng Long but withdraw after the Battle of Đông Bộ Đầu.
Jayavarman VII becomes Khmer king, bringing the empire to its greatest extent and building Angkor Thom and the Bayon.
Historian Lê Văn Hưu completes the Đại Việt sử ký, the first official national history of Vietnam.
Yuan forces under Toghon invade Đại Việt; Trần forces led by Trần Hưng Đạo counter-attack and drive them out.
Trần Hưng Đạo destroys the Yuan fleet on the Bạch Đằng River, ending the third Mongol invasion of Đại Việt.