| |
| 1953, Aug. 10 |
| |
| In national elections, the Liberal Party, under Prime Minister Louis S. St. Laurent, won its fifth consecutive victory. | 1 |
| |
| 1955, Oct. 11 |
| |
| An agreement with the USSR, negotiated by Sec. Lester B. Pearson in Moscow, granted most-favored-nation trade privileges and cooperation in Arctic research. | 2 |
| |
| 1956, May 23 |
| |
| Sir Saville Garner was appointed to succeed Sir Archibald Nye as British high commissioner. | 3 |
| |
| Dec. 14 |
| |
| The national convention of the Progressive Conservative Party elected John Diefenbaker as its new leader, succeeding George Drew. | 4 |
| The Trades and Labour Congress of Canada and the Canadian Congress of Labour merged into one body, the Canadian Labour Congress (CLC). | 5 |
| |
| |
