Jasper A. Vrugt (born 1976) is a Dutch scientist/engineer/applied mathematician known for his work in the earth sciences: surface hydrology, soil physics, hydrogeophysics, hydrometeorology, and geophysics. Vrugt is an assistant professor at the University of California, Irvine and holds a joint appointment in the Department of Civil and Environmental Engineering and the Department of Earth System Science. He also holds a part-time appointment as associate professor at the University of Amsterdam, Faculty of Science (CGE).