John B. Hogenesch is an American chronobiologist and Professor of Pediatrics at the Cincinnati Children's Hospital Medical Center. The primary focus of his work has been studying the network of mammalian clock genes from the genomic and computational perspective to further the understanding of circadian behavior. He is currently the Deputy Director of the Center for Chronobiology, an Ohio Eminent Scholar, and Professor of Pediatrics in the Divisions of Perinatal Biology and Immunobiology at the Cincinnati Children's Hospital Medical Center.