Born in Sudbury, Robert Marinier studied acting at the National Theatre School of Canada. He continued his training in dramatic creation at the Ateliers Alain Knapp in Paris. He has been working in the theatre industry for over twenty-five years: he writes, acts, directs and regularly acts as a dramaturgical consultant. He wrote of a dozen plays, including À la gauche de Dieu and L'Insomnie, nominated for the Trillium Award in 1997 and the Governor General Award in 1998.
Most recently, he wrote Un conte de l'apocalypse, a futuristic play with an end-of-the-world feelpresented in early 2020 by NAC French Theatre and Théâtre de la Vieille 17.