John F. Hartwig is an American organometallic chemist who holds the position of Henry Rapoport Professor of Chemistry at the University of California, Berkeley.

His laboratory traditionally focuses on developing transition metal-catalyzed reactions.

With Robert G. Bergman and Richard A. Andersen as coadvisors, he earned his Ph.D. from the University of California, Berkeley in 1990.

Thereafter he was an American Cancer Society Postdoctoral Associate at MIT, where he worked in the laboratory of Stephen J. Lippard.

Here is an example of this reaction (OTf = triflate or trifluoromethanesulfonate): Also while at Yale, he discovered the metal-catalyzed borylation of unactivated C-H bonds.