René Roy (born November 4, 1952) is a Canadian organic chemist from Quebec, specializing in glycobiology and carbohydrate chemistry. He is professor emeritus, Department of chemistry, at the Université du Québec à Montréal (UQAM) and associate professor at the Institut National de la Recherche Scientifique (INRS) – Institut Armand-Frappier (IAF). He is the founder and former director of PharmaQAM, a biopharmaceutical research center based at UQAM, focusing on the discovery of new bioactive molecules, their mechanism of action and the vectorization of drugs. 
He is a pioneer in the development of synthetic glycoconjugate vaccines both for human and veterinary health, having co-developed the first and sole marketed semi-synthetic vaccine for human use, preventing bacterial meningitis and pneumonia in developing countries.