| Head of Post | Title | Career | Appointment Date | Presentation of credentials | Termination of mission |
| Summers, George Bernard | EEMP | C | 1959/01/09 | 1959/03/11 | 1961/02/14 |
| Summers, George Bernard | AE&P | C | 1961/01/12 | 1961/02/14 | 1962/07/25 |
| Malone, Thomas Paul | AE&P | C | 1962/11/29 | 1963/01/26 | 1965/05/05 |
| Eberts, Christopher Campbell | AE&P | C | 1967/07/26 | 1971/12/20 | |
| Meech, Frederick Martyn | Chargé d'Affaires a.i. | C | 1971/12/20 | 1972/09/00 | |
| George, James | AE&P | C | 1972/05/23 | 1977/09/21 | |
| Taylor, Kenneth Douglas | AE&P | C | 1977/07/28 | 1977/10/08 | 1980/01/27 |
| Mullin, Scott J. | Chargé d'Affaires a.i. | C | 1988/09/00 | 1990/11/01 | |
| Dingledine, Paul S. | AE&P | C | 1990/00/00 | 1991/01/09 | |
| McLennan, Donald P. | AE&P | C | 1993/12/15 | ||
| de Salaberry, Michel | AE&P | C | 1996/09/11 | ||
| Colfer, Terence | AE&P | C | 1999/08/11 | ||
| MacKinnon, Philip | C | 2001/08/20 | |||
| Venner, Gordon E. | AE&P | C | 2004/11/22 | 2005/03/26 | |
| Mundy, John | AE&P | NC | 2007/04/13 |