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.