Aristarco O'Reilly Díaz

Aristarco O’Reilly Díaz (1927 – 19 September 1985) was a Cuban landscape painter. Born in Encrucijada, in the former province of Las Villas, he later lived and worked in Cuba, Europe, and Mexico.

Early life O’Reilly Díaz was born in 1927 in Encrucijada, Las Villas Province, Cuba. In the early 1930s, his mother, Mónica Díaz, a seamstress, separated from her husband Pedro O’Reilly and moved with her children to Havana. The family included five sons and five daughters. Among his siblings were a physician, a graduate in literature, and a scientist, while Aristarco pursued the visual arts. He was the brother of engineer and academic Vitervo O’Reilly Díaz.

After returning to Cuba, he worked as a restorer at the Museo Nacional de Bellas Artes in Havana. Over the course of his career, he exhibited in Europe and the United States before establishing himself permanently in Mexico.

After traveling to Mexico, his painting became more influenced by the Mexican muralist movement. His later works showed a loosening of contour and a greater emphasis on color structure and compositional movement. Contemporary commentary contrasted his approach with that of Miguel Collazo, noting O’Reilly's reduced emphasis on drawing in favor of chromatic organization.