Guy St-Julien (born February 19, 1940) is a Canadian politician. He is a former director of human resources and a senior clerk. St-Julien was born in Val-d'Or, Quebec.
St-Julien was a member of the Liberal Party of Canada in the House of Commons of Canada, representing the riding of Abitibi—Baie-James—Nunavik from 2000 to 2004, and Abitibi as a Liberal from 1997 to 2000 and as a Progressive Conservative from 1984 to 1993.
He lost his seat (now called Nunavik—Eeyou) in the 2004 election to Bloc Québécois candidate Yvon Lévesque.