David Eisenbud (born 8 April 1947 in New York City) is an American mathematician.

[1] Eisenbud received his Ph.D. in 1970 from the University of Chicago, where he was a student of Saunders Mac Lane and, unofficially, James Christopher Robson.

Notable contributions include the theory of matrix factorizations for maximal Cohen–Macaulay modules over hypersurface rings, the Eisenbud–Goto conjecture on degrees of generators of syzygy modules, and the Buchsbaum–Eisenbud criterion for exactness of a complex.

He also proposed the Eisenbud–Evans conjecture, which was later settled by the Indian mathematician Neithalath Mohan Kumar.

[3] He has had 31 doctoral students, including Craig Huneke, Mircea Mustaţă, Irena Peeva, and Gregory G. Smith (winner of the Aisenstadt Prize in 2007).