Saiful Islam  (born 14 August 1963) is a British chemist and professor of materials modelling at the Department of Materials, University of Oxford. Saiful is a Fellow of the Royal Society of Chemistry (FRSC), and received the Royal Society's Wolfson Research Merit Award and Hughes Medal, and the American Chemical Society Award for Energy Chemistry for his major contributions to the fundamental atomistic understanding of new materials for lithium batteries and perovskite solar cells.
Saiful is an atheist who refused the Order of the British Empire citing discomfort with the phrase "British Empire" and its link to colonialism.