Heinrich Mathias Ernst Campendonk (born 3 November 1889 in Krefeld, North Rhine-Westphalia, Germany – died 9 May 1957 in Amsterdam, Netherlands) was a painter and graphic designer born in Germany and became a Naturalized Dutch citizen.
Campendonk was the son of a textile merchant, stopped his textile apprenticeship in 1905. From 1905 - 1909, he received artistic education from Johan Thorn Prikker, a very progressive school for arts and crafts at the time. He became friends with Helmuth Macke, August Macke, Wilhelm Wieger, Franz Marc and Paul Klee during this time.
He was born in Krefeld. He was a member of the Der Blaue Reiter group, from 1911 to 1912. When the Nazi regime came to power in 1933, he was among the many modernists condemned as degenerate artists, and prohibited from exhibiting. He moved to the Netherlands, where he spent the rest of his life working at the Rijksakademie in Amsterdam, first teaching Decorative Art, printmaking and stained-glass, then as the Academy Director. He died as a naturalized Dutchman.