Marie-Louise Michelsohn (born October 8, 1941) is a professor of mathematics at State University of New York at Stony Brook.
As of 2020, she has published twenty articles, on topics including complex geometry, spin manifolds and the Dirac operator, and the theory of algebraic cycles.
In her most widely-known work, published in 1982, Michelsohn introduced the notion of a balanced metric on a complex manifold.
Balanced metrics are, in part, of interest due to their role in the Strominger system arising from string theory.
She holds five masters athletics world records including through three age divisions of the 2000 metres steeplechase which she has held since 2002.