Robert (Bob) Fosbury (born 2 April 1948) is currently an emeritus astronomer at the European Southern Observatory and an honorary professor at the Institute of Ophthalmology at UCL. He is an astronomer who worked for 26 years at the European Space Agency (ESA) as part of ESA's collaboration with NASA on the Hubble Space Telescope (HST) project at ST-ECF. Based at the European Southern Observatory (ESO) near Munich in Germany, Fosbury joined this initiative in 1985, more than 5 years before launch. During the latter part of this period, Bob served on NASA's Ad Hoc Science Working Group and ESA's Study Science Team as they developed the instrument concepts for the James Webb Space Telescope, the next-generation space observatory.