Canadian ambassadors to the United Nations, full title Canadian Ambassador to the United Nations, with the rank and status of Ambassador Extraordinary and Plenipotentiary Permanent Representative.
| Ambassador | Start of Term | End of Term |
|---|---|---|
| General Andrew McNaughton | January 1948 | December 1949 |
| John Wendell Holmes | January 1950 | June 1950 |
| Robert Gerald Riddell | June 1950 | June 1951 |
| David Moffat Johnson | November 1951 | August 1955 |
| Robert Alexander Mackay | August 1955 | November 1957 |
| Charles S.A. Ritchie | January 1958 | February 1962 |
| Pierre Tremblay | July 1962 | June 1966 |
| George Ignatieff | July 1966 | February 1969 |
| Yvon Beaulne | February 1969 | June 1972 |
| Saul F. Rae | July 1972 | July 1976 |
| William H. Barton | August 1976 | April 1980 |
| Michel Dupuy | April 1980 | May 1981 |
| Gérard Pelletier | May 1981 | August 1984 |
| Stephen Lewis | 1984 | August 1988 |
| Yves Fortier | August 1988 | December 1991 |
| Louise Fréchette | January 1992 | December 1994 |
| Robert Fowler | January 1995 | August 2000 |
| Paul Heinbecker | August 2000 | January 2004 |
| Allan Rock | January 2004 | June 2006 |
| John McNee | July 2006 | July 2011 |
| Guillermo E. Rishchynski | August 2011 | Present |