Barbara Jo Turpin is an American chemist who is a Professor of Atmospheric Chemistry at the University of North Carolina at Chapel Hill. Her research considers aerosol science and environmental engineering. Turpin studies the formation of organic particulate matter via aqueous chemistry. She was awarded the 2018 American Chemical Society Award for Creative Advances in Environmental Science and Technology. Turpin is a Fellow of the American Association for Aerosol Research, American Geophysical Union and American Association for the Advancement of Science.