Fred L. Soper (1893-1977) was an American epidemiologist and public health administrator who won a Lasker Award in 1946 for organizing successful campaigns to eradicate yellow fever and malaria between 1927 and 1945. He also made key contributions to the control of typhus fever during World War II, and served as director of the Pan American Sanitary Bureau, (executive agency of the Pan American Health Organization) from 1947 to 1959. Throughout his career, he set new standards for disease control worldwide.