Alexandre Nikolayevich Benois (Russian: Алекса́ндр Никола́евич Бенуа́, also spelled Alexander Benois; 3 May [O.S. 21 April] 1870,Saint Petersburg – 9 February 1960, Paris) was an influential Russian artist, art critic, historian, preservationist, and founding member of Mir iskusstva (World of Art), an art movement and magazine. As a designer for the Ballets Russes under Sergei Diaghilev, Benois exerted what is considered a seminal influence on the modern ballet and stage design.
Alexandre was born into the artistic and intellectual Benois family, prominent members of the 19th- and early 20th-century Russian intelligentsia. His mother Camilla (ru: Камилла Альбертовна Кавос, and then Бенуа) was the granddaughter of Catterino Cavos. His father was Nicholas Benois, a noted Russian architect. His brothers included Albert, a painter, and Leon, also a notable architect. His sister, Maria, married the composer and conductor Nikolai Tcherepnin (with whom Alexandre would work). Not planning a career in the arts, Alexandre graduated from the Faculty of Law, Saint Petersburg Imperial University, in 1894.
Three years later while in Versailles, Benois painted a series of watercolors depicting Last Promenades of Louis XIV. When exhibited by Pavel Tretyakov in 1897, they brought him to attention of Sergei Diaghilev and the artist Léon Bakst. Together the three men founded the art magazine and movement Mir iskusstva (World of Art), which promoted the Aesthetic Movement and Art Nouveau in Russia.