Professor Sarah Harper FRAI CBE is a British gerontologist, who established Oxford's Institute of Population Ageing, and became the University of Oxford's first Professor of Gerontology. She served on the Prime Minister's Council for Science and Technology between 2014 and 2017 and in 2017 was appointed Director of the Royal Institution of Great Britain. Sarah was appointed a CBE in 2018 for services to the Science of Demography.