A. Thomas Tymoczko (September 1, 1943 – August 8, 1996) was a philosopher specializing in logic and the philosophy of mathematics. He taught at Smith College in Northampton, Massachusetts from 1971 until his death from stomach cancer in 1996, aged 52. He is considered to be a member of the fallibilist school in philosophy of mathematics. Philip Kitcher dubbed this school the "maverick" tradition in the philosophy of mathematics. (Paul Ernest) He completed an undergraduate degree from Harvard University in 1965, and his PhD from the same university in 1972.