The Xá Lợi Pagoda raids were a series of synchronized attacks on various Buddhist pagodas in the major cities of South Vietnam shortly after midnight on 21 August 1963. The raids were executed by the Army of the Republic of Vietnam Special Forces under Colonel Lê Quang Tung, and combat police, both of which took their orders directly from Ngô Đình Nhu, younger brother of the Roman Catholic President Ngô Đình Diệm. Xá Lợi Pagoda, the largest pagoda in the South Vietnamese capital, Saigon, was the most prominent of the raided temples. Over 1,400 Buddhists were arrested, and estimates of the death toll and missing ranged up to the hundreds. In response to the Huế Vesak shootings and a ban on the Buddhist flag in early May, South Vietnam's Buddhist majority rose in widespread civil disobedience and protest against the religious bias and discrimination of the Catholic-dominated Diệm government. Buddhist temples in major cities, most prominently the Xá Lợi pagoda, became focal points for protesters and assembly points for Buddhist monks from rural areas.

South Vietnam, officially the Republic of Vietnam, was a country in Southeast Asia that existed from 1955 to 1975, the period when the southern portion of Vietnam was a member of the Western Bloc during part of the Cold War after the 1954 division of Vietnam. It first received international recognition in 1949 as the State of Vietnam within the French Union, with its capital at Saigon, before becoming a republic in 1955. South Vietnam was bordered by North Vietnam to the north, Laos to the northwest, Cambodia to the southwest, and Thailand across the Gulf of Thailand to the southwest. Its sovereignty was recognized by the United States and 87 other nations, though it failed to gain admission into the United Nations as a result of a Soviet veto in 1957. It was succeeded by the Republic of South Vietnam in 1975. In 1976, the Republic of South Vietnam and North Vietnam merged to form the Socialist Republic of Vietnam.