In 1991, Beausoleil won the Prix littéraires du Journal de Montréal for "Une certain fin de siècle". He was also a finalist for the 1991 Governor General's Awards. He won the 1997 Prix Alain-Grandbois for "Grand Hôtel des étrangers". "La Blessure du silence" won the Prix Louise-Labé in 2009, and "Mystère Wilde" won the Prix Heredia of the Académie française in 2015.