Diana Leblanc was born in Montreal, Canada. She was a founding member of the Soulpepper Theatre Company in Toronto and a member of the Neptune Theatre, as well as artistic director for the French Theatre of Toronto. She has directed for the Stratford Shakespeare Festival, The National Arts Centre, Segal Centre for Performing Arts, Mirvish Productions, Tarragon Theatre, the Canadian Opera Company, Calgary Opera,Pacific Opera,and the International Opera Centrum in Amsterdam, Netherlands. As an actress, she has performed at the Shaw Festival, Stratford Shakespeare Festival, National Arts Centre, Soulpepper, French Theatre of Toronto, and Tarragon Theatre, in plays ranging from classics to contemporary works.
Diana Leblanc's awards and honors include a Gemini Award, the Gascon-Thomas Award, the Silver Ticket Award, the Sterling Award, and the Prix Alliance. In 2015 she received a Governor General's Performing Arts Award.