Jean-Jacques Blais (born 1940 in Sturgeon Falls, Ontario) is a former Canadian politician, who represented the riding of Nipissing in the Canadian House of Commons from 1972 to 1984. He was a member of the Liberal Party of Canada.
Blais, a lawyer, served in several cabinet posts in the government of Pierre Trudeau. He was parliamentary secretary to the President of the Privy Council from 1975 to 1976, Postmaster General from 1976 to 1978, and Solicitor General from 1978 to 1979.
Blais retained his seat when the Liberals were defeated by the Progressive Conservative government of Joe Clark, and returned to cabinet when the Liberals regained power in 1980. He served as Minister of Supply and Services from 1980 to 1983, and Minister of National Defense from 1983 until the 1984 election, when he lost his seat to Moe Mantha in the Progressive Conservative sweep of Brian Mulroney.
Blais subsequently returned to practicing law. In 1994, he was appointed chair of the Pearson Peacekeeping Centre , holding that position until he retired in 2002.
