Oscar Elton Sette (March 29, 1900 - July 25, 1972), who preferred to be called Elton Sette, was an influential 20th-century American fisheries scientist.
During a five-decade career with the United States Bureau of Fisheries, United States Fish and Wildlife Service and its Bureau of Commercial Fisheries, and the National Marine Fisheries Service, Sette pioneered the integration of fisheries science with the sciences of oceanography and meteorology to develop a complete understanding of the physical and biological characteristics of the ocean environment and the effects of those characteristics on fisheries and fluctuations in the abundance of fish.
He is recognized both in the United States and internationally for many significant contributions he made to marine fisheries research and for his leadership in the maturation of fisheries science to encompass fisheries oceanography, defined as the "appraisal or exploitation of any kind of [marine] organism useful to Man" and "the study of oceanic processes affecting the abundance and availability of commercial fishes." Many fisheries scientists consider him to be the "father of modern fisheries science."