Edward Stephen Harkness was an American philanthropist. Given privately and through his family's Commonwealth Fund, Harkness' gifts to private hospitals, art museums, and educational institutions in the Northeastern United States were among the largest of the early twentieth century. He was a major benefactor to Columbia University, Yale University, Harvard University, Phillips Exeter Academy, St. Paul's School, the Metropolitan Museum of Art, and the University of St Andrews in Scotland. He was elected a member of the American Philosophical Society in 1934.