Marilyn Castonguay

Marilyn Castonguay (born 10 November 1984) is a Canadian actress whose career has been marked by a blend of intense dramatic roles and nuanced character work. A graduate of the prestigious National Theatre School of Canada, she honed her craft in both stage and screen productions, developing a reputation for emotional depth and precise timing. Her breakout performance came in the 2012 courtroom drama L'Affaire Dumont, in which she portrayed a determined young lawyer fighting for justice; the role earned her a nomination for Best Actress at the inaugural Canadian Screen Awards, cementing her status as a rising talent in the national film community. Critics praised her ability to convey vulnerability while maintaining a fierce resolve, noting that her expressive eyes and subtle gestures brought an authenticity that resonated with audiences across the country.

Since that milestone, Castonguay has built an eclectic filmography that includes the biographical epic Louis Cyr, the whimsical comedy Guardian Angel (2014), and the thought‑provoking sci‑fi drama Miraculum. She has also appeared in cult favorites such as The Decline and the experimental piece Frontiers, demonstrating a willingness to explore diverse genres. On television, she contributed memorable performances to series like Vertige, Fatale‑Station, and the romantic dramedy Happily Married (C’est comme ça que je t’aime). Beyond her on‑screen work, Castonguay is known for supporting emerging Canadian filmmakers and regularly participates in theatre workshops, mentoring young actors. Her continued presence in both independent and mainstream projects reflects a dedication to storytelling that balances artistic integrity with broad audience appeal.