Alexander Konstantinovich Bogomazov or Oleksandr Kostiantynovych Bohomazov was a Ukrainian painter, cubo-futurist, modern art theoretician and is recognised as one of the key figures of the Ukrainian avant-garde scene. In 1914, Oleksandr wrote his treatise The Art of Painting and the Elements. In it he analyzed the interaction between Object, Artist, Picture, and Spectator and sets the theoretical foundation of modern art. During his artistic life Oleksandr Bohomazov mastered several art styles. The most known are Cubo-Futurism (1913–1917) and Spectralism (1920–1930).

Ukrainian avant-garde is the avant-garde movement in Ukrainian art from the end of 1890s to the middle of the 1930s along with associated artists in sculpture, painting, literature, cinema, theater, stage design, graphics, music, and architecture. Some well-known Ukrainian avant-garde artists include: Kazimir Malevich, Alexander Archipenko, Vladimir Tatlin, Sonia Delaunay, Vasyl Yermylov, Alexander Bogomazov, Aleksandra Ekster, David Burliuk, Vadym Meller, and Anatol Petrytsky. All were closely connected to the Ukrainian cities of Kyiv, Kharkiv, Lviv, and Odesa by either birth, education, language, national traditions or identity. Since it originated when Ukraine was part of the Russian Empire, Ukrainian avant-garde has been commonly lumped by critics into the Russian avant-garde movement.