| Head Of Post | Title | Career | Appointment Date | Presentation of credentials | Termination of mission |
| MacCallum, Elizabeth Pauline | Chargé d'Affaires a.i. | C | 1954/10/19 | | |
| Kirkwood, Kenneth Porter | EEMP | C | 1954/11/18 | 1955/02/23 | |
| Roy, Lionel Victor Joseph | Chargé d'Affaires a.i. | C | 1956/03 | | |
| Norman, Egerton Herbert | EEMP | C | 1956/04/12 | 1956/10/31 | 1957/04/04 |
| Macdonnell, Ronald Macalister | EEMP | C | 1957/06/13 | | 1958/08/30 |
| Beaulieu, Paul André | Chargé d'Affaires a.i. | C | 1958/03/24 | | 1958/11/17 |
| Beaulieu, Paul André | AE&P | C | 1958/09/25 | 1958/11/17 | 1963/12/07 |
| Maybee, John Ryerson | AE&P | C | 1964/06/11 | | 1967/08/01 |
| Hardy, Christian | AE&P | C | 1967/07/26 | 1967/09/20 | 1969/08/30 |
| Gignac, Jacques Gilles Bruno | AE&P | C | 1970/01/14 | | 1974/08/28 |
| Amyot, Léopold Henri | AE&P | C | 1974/06/10 | 1974/09/00 | 1976/01/07 |
| Sullivan, Alan William | Chargé d'Affaires a.i. | C | 1976/01/07 | | 1976/07/26 |
| Singleton, Howard Barham | Chargé d'Affaires a.i. | C | 1976/09/04 | | 1977/10/01 |
| Couvrette, Joseph Gilles André | AE&P | C | 1977/08/31 | 1977/10/29 | 1978/09/27 |
| Arcand, Théodore Jean | AE&P | C | 1978/12/21 | 1979/03/08 | 1982/08/07 |
| Jackson, Robert David | AE&P | C | 1982/09/22 | 1982/11/05 | |
| Noiseux, Jacques | AE&P | C | 1984/08/31 | 1984/10/13 | 1987/07/07 |
| Ferguson, Ian | Chargé d'Affaires a.i. | C | 1987/07/07 | | 1988/08/21 |
| Rohringer, Leslie Andrew Michael | Chargé d'Affaires a.i. | C | 1988/08/21 | | 1989/02/00 |
| Sarafian, Haig Edouard | Chargé d'Affaires a.i. | C | 1989/02/00 | | 1990/07/19 |
| Harman, Gary Richard | AE&P | C | 1990/05/14 | 1990/06/22 | 1990/08/09 |
| Collacott, David Martin | AE&P | C | 1990/09/11 | 1991/05/03 | |
| McNee, John A. | AE&P | C | 1993/12/15 | 1995/01/24 | |
| Marchand, Daniel | AE&P | C | 1994/12/23 | | |
| Sarafian, Haig Edouard | AE&P | C | 1998/07/15 | 1998/09/00 | 2002/08/00 |
| Duval, Michel | AE&P | C | 2002/08/01 | | |
| de Lorimier, Louis | AE&P | C | 2005/08/02 | | 2008 |
| Pagé, Martial | AE&P | C | 2008/07/04 | | |
| Childs-Adams, Hilary | AE&P | C | 2010/08/10 | | |
| Cameron, Michelle | AE&P | C | 2014/11/20 | | |
| Lamoureux, Emmanuelle | AE&P | C | 2017/08/17 | 2017/10/17 | 2020/07/04 |
| Chastenay, Chantal | AE&P | C | 2020/08/14 | 2020/10/16 | 2022/08/19 |
| McCollum, Stefanie | AE&P | C | 2022/07/29 | 2022/09/15 | |
