| Head of Post | Title | Career | Appointment Date | Presentation of credentials | Termination of mission |
| Cox, Gordon Edwin | HC | C | 1972/04/06 | 1972/06/05 | 1972/08/26 |
| Riddell, Gordon George | HC | C | 1972/06/08 | 1972/10/30 | 1974/06/16 |
| McLaren, Robert Wallace | HC | C | 1973/07/24 | 1973/07/25 | 1975/08/01 |
| Godsell, Jack F. | HC | C | 1976/02/17 | 1976/02/28 | 1979/06/27 |
| Wright, Arthur Robert | HC | C | 1979/04/04 | 1979/07/22 | 1982/07/16 |
| Westdal, Christopher William | HC | C | 1982/09/22 | 1982/09/23 | |
| Vincent, Anthony | HC | C | 1985/07/04 | 1985/10/08 | 1988/09/02 |
| Gauvreau, Émile | HC | C | 1988/08/17 | 1988/10/29 | 1993/08/05 |
| Scott, Jon J. | HC | C | 1993/07/23 | 1993/09/12 | |
| Etheridge, Nicholas | HC | NC | 1996/09/11 | 1999/08/04 | |
| Preston, David | HC | C | 1999/08/11 | 1999/10/05 | 2002/07/12 |
| Campbell, Gerald K. | HC | C | 2002/08/01 | 2002/09/05 | |
| Sproule, David | HC | C | 2004/08/09 | 2004/09/05 | |
| Richardson, Barbara | HC | C | 2005/11/24 | 2005/12/22 | |
| McDougall, Robert | HC | C | 2008/09/02 | ||
| Cruden, Heather | HC | NC | 2011/10/03 |