Alan Jeffrey "Jerry" Nussbaum (born December 17, 1947) is an American linguist of the Indo-European languages and a classical philologist, best known for his work on the language of the Homeric epics and modern and Proto-Indo-European nominals. He has specialized in nominals' derivational semantics and morphology (including that of the "Caland system"). He is a professor of Indo-European linguistics, and the Greek and Latin languages at Cornell University. Nussbaum was married to philosopher Martha Nussbaum, professor of law and ethics at the University of Chicago, until 1987.