391 was a periodical created and edited by the Dadaist Francis Picabia. It first appeared in January 1917 in Barcelona, and continued to be published until 1924. Picabia was assisted in assembling the magazine by Olga Sacharoff, a Georgian emigre residing in Barcelona.
The title of the magazine derives from Alfred Stieglitz's New York periodical 291 (to which Picabia had contributed), and bore no relation to its contents. Despite Picabia's renown as an artist, it was mostly literary in content, with a wide-ranging aggressive tone, possibly influenced by Alfred Jarry and Apollinaire. There were contributions by two men new to Dada: Man Ray and Marcel Duchamp. However 391 remained essentially the expression of the inventive, energetic and wealthy Picabia, who stated of it: "Every page must explode, whether through seriousness, profundity, turbulence, nausea, the new, the eternal, annihilating nonsense, enthusiasm for principles, or the way it is printed. Art must be unaesthetic in the extreme, useless and impossible to justify."