Gérard de Lacaze-Duthiers (26 January 1876 – 3 May 1958) was a French writer, art critic, pacifist and anarchist.
Lacaze-Duthiers, an art critic for the Symbolist review journal La Plume, was influenced by Oscar Wilde, Nietzsche and Max Stirner. His (1906) L'Ideal Humain de l'Art helped found the 'Artistocracy' movement - a movement advocating life in the service of art. His ideal was an anti-elitist aestheticism: "All men should be artists". Together with André Colomer and Manuel Devaldes, he founded L'Action d'Art, an anarchist literary journal, in 1913.