Dame Julia Mary Slingo, DBE,FRS (néeWalker; born 13 December 1950) is a British meteorologist and climate scientist. She has been the Chief Scientist at the Met Office since 2009. She is also a Visiting Professor in the Department of Meteorology at the University of Reading, where she held, prior to appointment to the Met Office, the positions of Director of Climate Research in NERC's National Centre for Atmospheric Science and founding Director of the Walker Institute for Climate System Research.
In 2015 she was appointed as one of seven members of the High Level Group of Scientific Advisors of the EC Scientific Advice Mechanism.