Emma J. Bunce (born 1975) is a British space physicist and Professor of Planetary Plasma Physics at the University of Leicester. She holds a Royal Society Wolfson Research Merit Award. Her research is on the magnetospheres of Saturn and Jupiter. She is principal investigator (PI) of the MIXS instrument on BepiColombo, was deputy lead on the Jupiter Icy Moons Explorer proposal, and co-investigator on the Cassini–Huygens mission. Bunce is the current President of the Royal Astronomical Society; her term began on 26 June 2020 and will run for two years.