The 27th Canadian Parliament was in session from January 18, 1966 until April 23, 1968. The membership was set by the 1965 federal election on November 8, 1965, and it changed only somewhat due to resignations and by-elections until it was dissolved prior to the 1968 election.

It was controlled by a Liberal Party minority under Prime Minister Lester B. Pearson and the 19th Canadian Ministry. Pierre Trudeau succeeded Pearson as party leader and Prime Minister shortly before this Parliament ended for the 1968 national election.

The Official Opposition was the Progressive Conservative Party, led first by John Diefenbaker, and subsequently by Michael Starr.

The Speaker was Lucien Lamoureux. See also List of Canadian electoral districts 1952-1966 for a list of the ridings in this parliament.

There were two sessions of the 27th Parliament:

Notes:

"% change" refers to change from previous election ¹ "Previous" refers to the results of the previous election, not the party standings in the House of Commons prior to dissolution.

Following is a full list of members of the twenty-seventh Parliament listed first by province or territory, then by electoral district.

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