| Name | Title | Appointed | Presented credentials | Terminated mission | Notes |
|---|
| William Attwood – Political appointee[2] | Ambassador Extraordinary and Plenipotentiary | February 20, 1964 | March 2, 1964 | May 1, 1966 |
| Glenn W.
Ferguson – Political appointee | September 16, 1966 | November 4, 1966 | April 7, 1969 |
| Robinson McIlvaine – Career FSO | September 15, 1969 | September 30, 1969 | April 4, 1973 |
| Anthony D.
Marshall – Political appointee[3] | December 19, 1973 | January 22, 1974 | April 26, 1977 |
| Wilbert John LeMelle – Political appointee[3] | May 11, 1977 | August 10, 1977 | June 28, 1980 |
| William Caldwell Harrop – Career FSO[3] | May 23, 1980 | July 10, 1980 | September 1, 1983 |
| Gerald Eustis Thomas – Political appointee | October 7, 1983 | November 9, 1983 | September 29, 1986[4] |
| Elinor Greer Constable – Career FSO | October 16, 1986 | December 11, 1986
|