Wendell L. Roelofs (born July 26, 1938) was the first researcher to characterize insect sex pheromone structures, developing microchemical techniques for the isolation and identification of pheromone components.
Roelofs obtained his Bachelor of Science in chemistry in 1960 from Central College in Pella, Iowa and his Doctor of Philosophy in organic chemistry from Indiana University Bloomington in 1964. He is the Liberty Hyde Bailey Professor of Insect Biochemistry in the Department of Entomology at Cornell University in Ithaca, New York.
Roelofs received the Wolf Prize in Agriculture in 1982, and the National Medal of Science from President Ronald Reagan in 1983.