Wallace Osgood Fenn[1] (April 27, 1893 – September 20, 1971) was a physiologist, chairman of the department of physiology at the University of Rochester from 1925 to 1959. He also headed the University's Space and Science center from 1964 to 1966. He was also the president of the American Physiological Society, the president of the American Institute of Biological Sciences, and the president of the International Union of Physiological Science. His work on heat generated by muscles, oxygen use by the nervous system, and potassium equilibrium in muscle, as well as pressure breathing and nitrogen narcosis, was recognized internationally. The New York Times called him a "leading physiologist". Other recognitions includes honorary degrees from the University of Chicago, the University of Brussels and from the University of Paris, as well as the following awards: Feltrinell International Prize for Experimental Medicine and the Guggenheim award of the International Academy of Astronautics.[1][2][3][4][5]