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.

Nguyễn Cao Kỳ was a South Vietnamese military officer and politician who served as the chief of the Republic of Vietnam Air Force in the 1960s, before leading the nation as the prime minister of South Vietnam in a military junta from 1965 to 1967. Then, until his retirement from politics in 1971, he served as vice president to bitter rival General Nguyễn Văn Thiệu, in a nominally civilian administration.