Paul Hardin (born September 14, 1960) is a prominent scientist in the field of chronobiology and a pioneering researcher in the understanding of circadian clocks in flies and mammals.
Hardin currently serves as a Distinguished Professor in the Biology Department at Texas A&M University.
He is best known for his discovery of circadian oscillations in the mRNA of the clock gene Period (per), the importance of the E-Box in per activation, the interlocked feedback loops that control rhythms in activator gene transcription, and the circadian regulation of olfaction in Drosophila melanogaster.
Born in a suburb of Chicago, Matteson, Illinois, Hardin currently resides in College Station, Texas with his wife and three children.