Jeff Cheeger (born December 1, 1943) is an American mathematician and Silver Professor[1] at the Courant Institute of Mathematical Sciences of New York University.

He has served as a member of several American Mathematical Society committees and National Science Foundation panels.

[2] In 1998 Cheeger was elected a foreign member of the Finnish Academy of Science and Letters.

His election citation read: Cheeger has discovered many of the deepest results in Riemannian geometry, such as estimates for the spectrum of the Laplace-Beltrami operator, and the identity of the analytic and geometric definitions of torsion, and has led to the solution of problems in topology, graph theory, number theory, and Markov processes.

[4]He received the fourteenth Oswald Veblen Prize in Geometry from the American Mathematical Society in 2001.