Thomas B. Fitzpatrick (December 19, 1919 – November 16, 2003) was an American dermatologist. He was Chairman of the Department of Dermatology at Harvard Medical School and Chief of the Massachusetts General Hospital Dermatology Service from 1959 to 1987. He has been described as "the father of modern academic dermatology" and as "the most influential dermatologist of the last 100 years", in part because he trained so many of the leaders in the field.[1]