The 1964 South Vietnamese coup may refer to:

January 1964 South Vietnamese coup

September 1964 South Vietnamese coup attempt

December 1964 South Vietnamese coup

Nguyễn Khánh ([ŋwiəŋ˨˩˦ kʰan˦˥]; 8 November 1927 – 11 January 2013) was a South Vietnamese military officer and Army of the Republic of Vietnam general who served in various capacities as head of state and prime minister of South Vietnam while at the head of a military junta from January 1964 until February 1965. He was involved in or against many coup attempts, failed and successful, from 1960 until his defeat and exile from South Vietnam in 1965. Khánh lived out his later years with his family, in exile in the United States, and died of pneumonia and end-stage kidney failure at a hospital in San Jose, California, on 11 January 2013.