Jack H. Freed (born April 19, 1938) is an American chemist known for his pioneering work in electron paramagnetic resonance (aka electron spin resonance) spectroscopy.

He is the Frank and Robert Laughlin Professor of Physical Chemistry, emeritus, at Cornell University in Ithaca, New York.

[1] In 2001, Freed founded the National Biomedical Center for Advanced Electron Spin Resonance Technology (ACERT)[2] funded by National Institutes of Health and has been its director since then.

Before that he was a fellow in numerous places such as Alfred P. Sloan Research Foundation, American Academy of Arts and Sciences, American Physical Society, John Simon Guggenheim Memorial Foundation, Hebrew University Institute for Advanced Studies, and Weizmann Institute of Science.

Located in Baker Lab on Cornell’s Ithaca campus, this national resource will provide cutting-edge ESR spectroscopy for biomedical researchers engaged in projects aimed at understanding and combating diseases and ailments.