Stephen H. Schanuel (14 July 1933 – 21 July 2014) was an American mathematician working in the fields of abstract algebra and category theory, number theory, and measure theory. ^{[1] [2]}

While he was a graduate student at University of Chicago, he discovered Schanuel's lemma, an essential lemma in homological algebra. ^[2] Schanuel received his Ph.D. in mathematics from Columbia University in 1963, under the supervision of Serge Lang. ^[2]

Shortly thereafter he stated a conjecture in the field of transcendental number theory, which remains an important open problem to this day. ^[2] Schanuel was a professor emeritus of mathematics at University at Buffalo. ^[1]

• Lawvere, F. William; Schanuel, Stephen Hoel (2009) [1997]. Conceptual Mathematics: A First Introduction to Categories (2nd ed.). Cambridge University Press. ISBN  978-0-521-89485-2.

• Stephen Schanuel at the Mathematics Genealogy Project
• Weisstein, Eric W. "Schanuel's Conjecture". MathWorld.