The Buddhist crisis was a period of political and religious tension in South Vietnam between May and November 1963, characterized by a series of repressive acts by the South Vietnamese government and a campaign of civil resistance, led mainly by Buddhist monks.

Thích Trí Quang was a Vietnamese Mahayana Buddhist monk best known for his role in leading South Vietnam's Buddhist population during the Buddhist crisis in 1963, and in later Buddhist protests against subsequent South Vietnamese military regimes until the Buddhist Uprising of 1966 was crushed.