Guy Tardif (May 30, 1935 – May 24, 2005) was a politician in the Canadian province of Quebec. He was a Parti Québécois member of the National Assembly of Quebec from 1976 to 1985 and was a cabinet minister in the governments of René Lévesque and Pierre-Marc Johnson.
Tardif was born in Montreal, received his early education in that city, and later studied at the University of Ottawa and the Université de Montréal. He was a Royal Canadian Mounted Police (RCMP) officer from 1955 to 1960 and was a lecturer and administrative assistant for the Montreal Police Service from 1963 to 1970.
He received a master's degree in criminology in 1966 and earned a Ph.D. from the Université de Montréal in 1974 for a thesis submission entitled Police et politique au Québec. Tardif also wrote several articles on police and prison issues and was a consultant for various government departments and commissions before launching his own career in politics.
Tardif was elected to the Quebec legislature in the 1976 provincial election, defeating one-term Liberal incumbent Jean Bienvenue in the Montreal division of Crémazie as the Parti Québécois won a historic majority government across the province. He was appointed to René Lévesque's first cabinet as minister of municipal affairs on November 26, 1976.