Marcel Joseph Aimé Lambert PC QC (August 21, 1919 – September 24, 2000) was a Canadian politician and Speaker of the House of Commons of Canada from 1962 to 1963.

Lambert refused to allow an emergency debate on the issue of Bomarc missiles that the opposition demanded when an American State Department press release was issued contradicting arguments made by the Diefenbaker government against accepting the missiles.

During the short-lived government of Joe Clark, he was chairman of the Miscellaneous Estimates Committee, and led it through a flurry of activity.

After being defeated in a bitter nomination race by his eventual successor, Murray Dorin, Lambert retired from the House of Commons at the 1984 election.

He was appointed to the Canadian Transportation Commission by Prime Minister Brian Mulroney following the election.