The Prix Iris for Best Visual Effects (French: Prix Iris des meilleurs effets visuels) is an annual film award, presented by Québec Cinéma as part of its Prix Iris awards program, to honour the year's best visual effects in films made within the Cinema of Quebec.
The award was presented for the first time at the 19th Quebec Cinema Awards in 2017.
Marie-Claude Lafontaine holds the records for most nominations, with ten, and most wins, with four.
She is the only person to win the same award in four consecutive years.
Additionally, Lafontaine was nominated for every film in the category in 2022, assuring her of a win, the only time this occurred in any category.