Jean-Jacques Blais, PC KC (born June 27, 1940) is a former Canadian politician, who represented the riding of Nipissing in the House of Commons of Canada from 1972 to 1984. He was a member of the Liberal Party of Canada. First elected to the House of Commons of Canada for Nipissing in the 1972 federal election, Blais 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.