DATE | NAME/MISSION |
| January 18, 1927 | LEGATION OPENED |
| February 18, 1927 | Vincent Massey, E.E. and M.P. |
| June 23, 1931 | William Duncan Herridge, E.E. and M.P. |
| October 20, 1936 | Sir Herbert Marler, E.E. and M.P. |
| September 25, 1939 | Loring C. Christie, E.E. and M.P. DIED April 8, 1941 |
| November 23, 1940 | Merchant Mahoney, Charge d'Affaires a.i. (Arab's name carried on List as absent until death) |
| March 14, 1941 | Leighton G. McCarthy, E.E. and M.P. |
| January 12, 1944 | LEGATION RAISED TO EMBASSY |
| December 16, 1943 | Leighton McCarthy, Appt. Amb. E. and P. |
| January 12, 1944 | Amb. E. and P. |
| January 9, 1945 | L. B. Pearson, Appt. Amb. E. and P. |
| January 22, 1945 | Amb. E. and P. |
| October 28, 1946 | Hume Wrong, Appt. Amb. E. and P. |
| November 8, 1946 | Amb. E. and P. |
| July 30, 1953 | A. D. P. Heeney, Appt. Amb. E. and P. |
| August 3, 1953 | Amb. E. and P. |
| May 16, 1957 | Norman A. Robertson, Appt. Amb. E. and P. |
| May 17, 1957 | Amb. E. and P. |
| February 4, 1959 | A. D. P. Heeney, Appt. Amb, E. and P. |
| March 2, 1959 | Amb. E. and P. |
| May 2, 1962 | Charles S. A. Ritchie, Appt. Amb. E. and P. |
| May 25, 1962 | Amb. E. and P. |
| July 19, 1966 | Albert Edgar Ritchie, Appt. Amb. E. and P. |
| July 22, 1966 | Amb. E. and P. |
| February 4, 1970 | Marcel Cadieux, Appt. Amb. E. and P. |
| February 20, 1970 | Amb. E. and P. |
| June 15, 1975 | J. Russell McKinney, Minister, Charge d'Affaires ad interim |
| July 9, 1975 | Jack Hamilton Warren, Appt. Amb. E. and P. |
| July 14, 1975 | Amb. E. and P. |
| July 19, 1977 | Peter Milburn Towe, Appt. Amb. E. and P. |
| July 29, 1977 | Amb. E. and P. |
| December 1, 1981 | Allan Ezra Gotlieb, Appt. Amb. E. and P. |
| December 8, 1981 | Amb. E. and P. |
| January 19, 1989 | Derek H. Burney, Appt. Amb. E. and P. |
| February 7, 1989 | Amb. E. and P. |
| January 19, 1993 | John J. D. de Chastelain, Appt. Amb. E. and P. |
| June 11, 1993 | Amb. E. and P. |
| January 24, 1994 | Raymond (A.H.)Chretien, Appt. Amb. E. and P. |
| February 14, 1994 | Amb. E. and P. |
| September 27, 2000 | Michael Kergin, Appt. Amb. E. and P. |
| October 19, 2000 | Amb. E. and P. |
| March 7, 2005 | Amb. Frank McKenna, Appt. Amb. E. and P. |
| March 8, 2005 | Amb. E. and P. |
| March 13, 2006 | Michael Wilson, Appt. Amb. E. and P. |
| March 13, 2006 | Amb. E. and P. |
| October 23, 2009 | Gary Albert Doer, Appt. |
| November 4, 2009 | Amb. E. and P. |
Special Terms* | |
