Incumbents
- Monarch: Elizabeth II
- Governor General: Georges Vanier
- Prime Minister: Lester B. Pearson
- Premier of Alberta: Ernest Manning
- Premier of British Columbia: W.A.C. Bennett
- Premier of Manitoba: Duff Roblin
- Premier of New Brunswick: Louis Robichaud
- Premier of Newfoundland: Joey Smallwood
- Premier of Nova Scotia: Robert Stanfield
- Premier of Ontario: John Robarts
- Premier of Prince Edward Island: Walter Shaw then Alex B. Campbell
- Premier of Quebec: Jean Lesage then Daniel Johnson, Sr.
- Premier of Saskatchewan: W. Ross Thatcher
Read more about this topic: 1966 In Canada