The Lý dynasty, officially Great Cồ Việt from 1009 to 1054 and Great Việt from 1054 to 1225, was a Vietnamese dynasty that existed from 1009 to 1225. It was established by Lý Công Uẩn when he overthrew the Early Lê dynasty. The dynasty ended when empress regnant Lý Chiêu Hoàng was pressured to abdicate the throne in favor of her husband, Trần Cảnh in 1225, the dynasty lasts for 216 years. During Lý Thánh Tông's reign, the official name of the state was changed from Đại Cồ Việt to Đại Việt, a name that would remain Vietnam's official name until the onset of the 19th century.

Lý Thái Tổ, personal name Lý Công Uẩn, temple name Thái Tổ, was a founding emperor of Lý dynasty and the 6th ruler of Đại Việt; he reigned from 1009 to 1028.