Michel Tremblay, CQ (born 25 June 1942) is a French Canadian novelist and playwright.
Tremblay was born in Montreal, Quebec, where he grew up in the French-speaking neighbourhood of Plateau Mont-Royal, at the time of his birth a neighbourhood with a working-class character and joual dialect, something that would heavily influence his work. Tremblay's first professionally produced play, Les Belles-Sœurs, was written in 1965 and premiered at the Théâtre du Rideau Vert on August 28, 1968. It transformed the old guard of Canadian theatre and introduced joual to the mainstream. It stirred up controversy by portraying the lives of working class women and attacking the straight-laced, deeply religious society of mid-20th century Quebec.