Pieter Cornelis (Piet) Mondriaan, after 1912 Mondrian, (pronounced: Pete Mon-dree-on, IPA: ) (b. Amersfoort, Netherlands, March 7, 1872 — d. New York City, February 1, 1944) was a Dutch painter.
He was an important contributor to the De Stijl art movement and group, which was founded by Theo van Doesburg. Despite being well-known, often-parodied and even trivialized, Mondriaan's paintings exhibit a complexity that belies their apparent simplicity. He is best known for his non-representational paintings that he called "compositions", consisting of rectangular forms of red, yellow, blue, white or black, separated by black rectilinear lines. They are the result of a stylistic evolution that occurred over the course of nearly 30 years and continued beyond that point to the end of his life.