Ellen R. Sandor is an American new media artist. In 1983 she founded (art)n, a Chicago-based collective of artists, scientists, mathematicians, and computer experts. Together they created a new art form, called PHSColograms, which are 3D barrier-screen computer-generated photographs and sculptures. She is best known for combining computer graphics, sculpture, and photography to visualize subject matter that includes architecture, historical events, and scientific phenomena.