Prix Iris for Best Supporting Actor

Québec Cinéma presents an annual award for Best Supporting Actor (Prix Iris de la meilleure interprétation masculin dans un rôle de soutien) to recognize the best in the Cinema of Quebec.

Until 2016, it was known as the Jutra Award for Best Supporting Actor in memory of influential Quebec film director Claude Jutra. Following the withdrawal of Jutra's name from the award, the 2016 award was presented under the name Québec Cinéma. The Prix Iris name was announced in October 2016.

Rémy Girard received the most nominations in this category, five, but didn't win any. Jean Lapointe and Luc Picard are the only actors to win this award twice. Two non-Canadian actors won the award: Serge Kanyinda for War Witch (Rebelle) and Sergio Castellitto for Mafia Inc., the former becoming the first black actor to win the award.

Five actors received nominations for Best Actor and Best Supporting Actor in the same year:
 * In 2002, Luc Picard won Best Actor for February 15, 1839 (15 février 1839) and was nominated for Best Supporting Actor for The Woman Who Drinks (La femme qui boit).
 * In 2008, Guillaume Lemay-Thivierge was nominated for Best Actor for Nitro and Best Supporting Actor for The 3 L'il Pigs (Les 3 p'tits cochons).
 * In 2012, Mario Saint-Amand was nominated for Best Actor for Gerry and Best Supporting Actor for Coteau rouge.
 * In 2020, Robin Aubert was nominated for Best Actor for Young Juliette (Jeune Juliette) and Best Supporting Actor for Thanks for Everything (Merci pour tout).
 * In 2023, Steve Laplante won Best Actor for Viking and was nominated for Best Supporting Actor for Babysitter.