Morris William Hirsch (born June 28, 1933) is an American mathematician, formerly at the University of California, Berkeley.

A native of Chicago, Illinois, Hirsch attained his doctorate from the University of Chicago in 1958, under supervision of Edwin Spanier and Stephen Smale.^[1] His thesis was entitled Immersions of Manifolds. In 2012 he became a fellow of the American Mathematical Society.^[2]

Hirsch had 23 doctoral students, including William Thurston, William Goldman, and Mary Lou Zeeman.

• with Stephen Smale and Robert L. Devaney: Differential equations, dynamical systems and an introduction to chaos, Academic Press 2004 (2nd edition)^[3] 3rd edition, 2013
• with Stephen Smale: Differential equations, dynamical systems and linear algebra, Academic Press 1974
• Differential Topology, Springer 1976,^[4] 1997
• with Barry Mazur: Smoothings of piecewise linear manifolds, Princeton University Press 1974
• with Charles C. Pugh, Michael Shub: Invariant Manifolds, Springer 1977

• Brouwer fixed-point theorem
• Chern's conjecture (affine geometry)
• Differential structure
• Homotopy principle
• Immersion (mathematics)
• Whitney embedding theorem