Thomas Arthur McMahon (April 21, 1943 – February 14, 1999) was a Professor of Applied Mechanics and Biology at Harvard University. His book Muscles, Reflexes and Locomotion is considered a classic on the mathematics, chemistry, biology, and mechanics of animal locomotion. He was born in Dayton, Ohio, and grew up in Lexington, Massachusetts. He also wrote four well-regarded novels, the last published posthumously. Loving Little Egypt won the 1988 Rosenthal Award from the American Academy of Arts and Letters.