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.
Visual effects producers Jean-François Ferland and Marie-Claude Lafontaine both received three nominations in the same year, in 2018 and 2022 respectively, a rare feat in the history of the Iris. 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.
Marie-Claude Lafontaine also holds the records for most nominations, with seven, and most wins, with three awards won in consecutive years.