Jacques Doniol-Valcroze (French: [ʒak dɔnjɔl valkʁoz]; 15 March 1920 – 6 October 1989) was a French actor, critic, screenwriter, and director. In 1951, Doniol-Valcroze was a co-founder of the renowned film magazine Cahiers du cinéma, along with André Bazin and Joseph-Marie Lo Duca. The magazine was initially edited by Doniol-Valcroze between 1951-1957. As critic, he championed numerous filmmakers including Orson Welles, Howard Hawks, and Nicholas Ray.
In 1955, he was a member of the jury at the 16th Venice International Film Festival, and in 1964 a member of the jury at the 14th Berlin International Film Festival.
In his thirties he played a pivotal role in the French New Wave, discussing the beginnings of "the new cinema" as the co-founder of Cahiers du cinéma and defended Alain Robbe-Grillet. His own works in this area include directing the film L'Eau à la bouche and acting in some New Wave films, including Chantal Akerman's cult classic Jeanne Dielman, 23 quai du Commerce, 1080 Bruxelles. Additionally he was friends with François Truffaut who shot his first film Une Visite in his apartment. He was married to Françoise Brion.
The Director’s Fortnight, founded in 1968 during the nationwide strikes which closed down the Cannes Film Festival that year, was the brainchild of Jacques Doniol-Valcroze. The event was sponsored by his fledgling Société des Réalisateurs de Films (Film Directors Society) with the intention of "...opening up the Cannes Festival to little-known filmmakers and national cinemas, without concern for budgets or shooting formats."
He died of a ruptured aneurysm in 1989.