Nguyễn Văn Thiệu, South Vietnamese military officer and politician, 2nd President of South Vietnam (born 1923)

Nguyễn Văn Thiệu was a South Vietnamese military officer and politician who was the president of South Vietnam from 1967 to 1975. He was a general in the Republic of Vietnam Armed Forces (RVNAF), became head of a military junta in 1965, and then president after winning a rigged election in 1967. He established rule over South Vietnam until he resigned and left the nation and relocated to Taipei a few days before the fall of Saigon and the ultimate North Vietnamese victory.

This is a list of leaders of South Vietnam, since the establishment of the Autonomous Republic of Cochinchina in 1946, and the division of Vietnam in 1954 until the fall of the Republic of Vietnam in 1975, and the reunification of Vietnam in 1976.

September 29 is the 272nd day of the year in the Gregorian calendar; 93 days remain until the end of the year.