Jack David Barchas is an American psychiatrist who is the Barklie McKee Henry Professor and Chairman of the Department of Psychiatry at the Weill Cornell Medical College of Cornell University and the Psychiatrist-in-Chief of the New York-Presbyterian Hospital/Weill Cornell Medical Center and the Payne Whitney Psychiatric Clinic. He was formerly the Nancy Friend Pritzker professor in psychiatry at Stanford University and dean of research and neuroscience at the University of California, Los Angeles School of Medicine.