Dr. Roy Michael Harrison (OBE FRS FRSC FRMetS) is a British professor who is a Distinguished Adjunct Professor at King Abdulaziz University in Jeddah, Saudi Arabia, and the Queen Elizabeth II Birmingham Centenary Professor of Environmental Health at the University of Birmingham in the United Kingdom.

Harrison attended Henley Grammar School and the University of Birmingham, earning a Bachelor of Science in Chemistry in 1969, a Ph.D. in Organic Chemistry in 1972, and a Doctor of Science in Environmental Chemistry in 1989. His doctoral study focused on tropolone ether sigmatropic processes.

Harrison’s work has been recognised by the Royal Society of Chemistry’s John Jeyes Medal and Environment Prize, as well as the Royal Meteorological Society’s Fitzroy Prize. He has chaired and/or served on advisory panels for the Department of Environment, Food, and Rural Affairs (Defra) and the Department of Health for many years.

In the 2004 New Year Honours, he was awarded the Order of the British Empire (OBE) for services to environmental research, and in 2017 he was elected a Fellow of the Royal Society (FRS).