1964 South Vietnamese coup

Before dawn on January 30, 1964, General Nguyễn Khánh ousted the military junta led by General Dương Văn Minh from the leadership of South Vietnam without firing a shot. It came less than three months after Minh's junta had themselves come to power in a bloody coup against then President Ngô Đình Diệm. The coup was bloodless and took less than a few hours—after power had been seized Minh's aide and bodyguard, Major Nguyễn Văn Nhung was arrested and summarily executed.

Distrusted by his colleagues because of his tendency to change sides and his reputation as an intriguer, Khánh was assigned to I Corps in the far north of the country after Diệm's overthrow to keep him away from the capital Saigon. Khánh, who had played a minor role in Diệm's overthrow, joined forces with Generals Trần Thiện Khiêm, Nguyễn Văn Thiệu, who felt they deserved better posts in the junta, and Colonels Nguyễn Chánh Thi and Đỗ Mậu, the latter being the director of military security under Diệm and an effective strategist.