Laurent Casimir (May 8, 1928–1990) was a Haitian artist.
Casimir moved to Port-au-Prince in the late 1940s and is here presented to the Centre d’Art in 1947 by his friend, the painter Dieudonné Cedor. From 1950 to 1956 he attended the Foyer of Fine Arts, founded by a group of intellectuals and modern artists, including Cedor. Casimir was one of the originators of a Haitian archetype market painting, he painted using various shades of red, orange and yellow.