Henryk Stażewski (9 January 1894 – 10 June 1988) was a Polish painter, considered to be a pioneer of the classical avant-garde of the 1920s and 1930s.
Stażewski was a foremost representative of the Constructivist movement, as well as the co-creator of the Geometric Abstract art movement, and a member of the Cercle et Carré group of abstract painters based in Paris.