Ernst von Glasersfeld (March 8, 1917 in Munich – November 12, 2010 in Leverett, Franklin County, Massachusetts) was a philosopher, and Emeritus Professor of Psychology at the University of Georgia, Research Associate at the Scientific Reasoning Research Institute, and Adjunct Professor in the Department of Psychology at the University of Massachusetts Amherst. He was a member of the Board of Trustees, American Society of Cybernetics, from which he received the McCulloch Memorial Award in 1991. He was a member of the Scientific Board, Instituto Piaget, Lisbon.