Jay M. Gregg is Professor of Geology and V. Brown Monnett Chair of Petroleum Geology at the Boone Pickens School of Geology at Oklahoma State University in Stillwater, Oklahoma.

Dr. Gregg completed his B.S degree in 1974 from Bowling Green State University with majors in Geology and Biology. He received his M.S. in Geology from Oklahoma State University (1976) and his Ph.D. in Geology from Michigan State University (1982).

Prior to joining the faculty at Oklahoma State, Dr. Gregg worked in the petroleum industry for Sun Production Company (1976 to 1978), the minerals industry for St. Joe Minerals Corporation (1982-87), on the national nuclear waste repository project for Westinghouse Hanford Co. (1987-88), and as a faculty member and later Chair of the Department of Geological Sciences and Engineering at the Missouri University of Science and Technology (1988-2005).

Dr. Gregg was awarded a Fulbright Scholarship to teach and conduct research at University College Dublin, Ireland (1995-96). He was a visiting professor at the University of the Western Cape in Cape Town, South Africa in 1977. Between July 2012 and August 2013, he joined the Shell Carbonate Research Team in Rijswijk, The Netherlands on a one-year sabbatical leave from Oklahoma State.

His professional expertise is in the fields of sedimentary petrology and geochemistry. He applies this to research to the origin and diagenesis of dolomite, the diagenetic history of sedimentary basins, the origin and distribution of sediment-hosted base metals and the diagenesis of carbonate hydrocarbon reservoirs. He has conducted research on the North American Midcontinent, the Caribbean region, South Africa, and northern Europe, and has authored, co-authored, or edited more than 80 professional publications.