Đại Việt emperor Lê Thánh Tông launched a military expedition against Champa, beginning the Champa–Đại Việt War.

Đại Việt, was a Vietnamese monarchy in eastern Mainland Southeast Asia from the 10th century AD to the early 19th century, centered around the region of present-day Hanoi. Its early name, Đại Cồ Việt, was established in 968 by the ruler Đinh Bộ Lĩnh after he ended the Anarchy of the 12 Warlords, until the beginning of the reign of Lý Thánh Tông, the third emperor of the Lý dynasty. Đại Việt lasted until the reign of Gia Long, the first emperor of the Nguyễn dynasty, when the name was changed to Việt Nam in 1804. Under rule of bilateral diplomacy with Imperial China, it was known as Principality of Giao Chỉ (975–1164) and Kingdom of Annam (1164–1804) when Emperor Xiaozong of Song upgraded Đại Việt's status from principality to kingdom.

Lê Thánh Tông, personal name Lê Hạo, temple name Thánh Tông, courtesy name Tư Thành, was an emperor of Đại Việt, reigning from 1460 to 1497, the fifth and the longest-reigning emperor of the Later Lê dynasty, and is widely praised as one of the greatest emperors in Vietnamese history. He came to power through a coup d'état against his second brother Lê Nghi Dân in 1460.

Champa was a collection of independent Cham polities that extended across the coast of what is present-day central and southern Vietnam from approximately the 2nd century CE until 1832.

The Cham–Đại Việt War of 1471 or Vietnamese invasion of Champa was a military expedition launched by Lê Thánh Tông of Đại Việt under the Lê dynasty and is widely regarded as the event that marked the downfall of Champa. In retaliation for Cham raids, Vietnamese forces attacked and sacked the kingdom's largest city-state, Vijaya, and defeated the Cham army, bringing the kingdom of Champa to an end. After this war, the border between of Đại Việt and Champa was moved from Hải Vân Pass to Cù Mông Pass from 1471 till 1611 when Nguyễn lords launched another invasions into South of Phú Yên and annexed it in 1611.