The Cham–Đại Việt War of 1471 or Vietnamese invasion of Champa was a military expedition launched by Emperor 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.