Janvier Grondin (born June 16, 1947 in Saint-Jules, Quebec) is a former politician in the province of Quebec, Canada. He represented the Beauce-Nord district at the National Assembly of Quebec until 2012 as a member of the Coalition Avenir Québec. He previously represented the riding as a member of the now defunct Action démocratique du Québec (ADQ), before the ADQ merged with the CAQ in January 2012. Grondin was first elected as a Member of the National Assembly in the 2003 election, with 46% of the vote. The Liberal incumbent Normand Poulin finished second with 38% of the vote.