George Earl Ortman (October 17, 1926 – December 16, 2015) was an American painter, printmaker, constructionist and sculptor. His work has been referred to as Neo-Dada, pop art,minimalism and hard-edge painting. His constructions, built with a variety of materials and objects, deal with the exploration off visual language derived from geometry—geometry as symbol and sign. Ortman was represented by Greenspon in New York.