Acid (French: Acide; released in the Philippines as Acid Rain) is a 2023 French-language fantasy drama film directed by Just Philippot from a screenplay by Philippot and Yacine Badday. The film is a co-production between France and Belgium. It is an expansion of Philippot's 2018 short film of the same name. The film premiered at the 76th Cannes Film Festival on 21 May 2023. It was released in France on 20 September 2023. ()