Wallace Sampson (March 29, 1930 – May 25, 2015), also known as Wally, was an American medical doctor and consumer advocate against alternative medicine and other fraud schemes. He was an authority in numerous medical fields, including oncology, hematology, and pathology. He was Emeritus Professor of Clinical Medicine at Stanford University. He was the former Head of Medical Oncology at Santa Clara Valley Medical Center, and a member of the faculty at the Skeptic's Toolbox 1998–2008.