| Nguyễn Đình Thuần | |
| Birth Date: | 5 June 1923 |
| Death Place: | Boulogne-Billancourt, France |
| Birth Place: | Hưng Yên Province, French Indochina |
| Resting Place Coordinates: | Père Lachaise Cemetery |
Nguyễn Đình Thuần (June 5, 1923 – June 3, 2013[1]) was the Secretary of State under President Ngô Đình Diệm of South Vietnam.After Ngô Đình Diệm was overthrown and then killed in the 1963 South Vietnamese coup, Nguyễn Đình Thuần moved to France to live with his brother.[2]
Initially, he worked as a journalist writing with Trần Trung Dung during their days in Hanoi. In 1955, President Ngô Đình Diệm appointed Trần Trung Dung to the position of Assistant Minister of National Defense, and he was also promoted to the position of General Manager of the Office under Mr. Dung. On 18 October 1960, Trần Trung Dung resigned as Assistant Minister of National Defense and Thuần was appointed to replace his predecessor.
He died in 2013 in Boulogne-Billancourt.