Professor Kenneth Reginald Harrap {{post-nominals|country=GBR|CBE|CChem|FRSC}DSc} (1931-2017) was a British oncological biochemist.
Harrap was born on 20 November 1931.He graduated with a BSc in Chemistry from the University of London, then worked for a while as an analytical chemist at Hopkins & Williams.
In 1956 he moved to the Institute of Cancer Research's Chester Beatty Research Institute in London.
He was promoted to Head of the Department of Applied Biochemistry in 1970, Head of the Department of Biochemical Pharmacology in 1977, Chairman of the Drug Development Section in 1982, and Director of the CRC's Centre for Cancer Therapeutics in 1994, becoming Emeritus upon retirement in 1997, at which time he also took up a partnership and consultancy role with Weston and Harrap Consulting.
He was elected a Fellow of the Royal Society of Chemistry, and was made a Commander of the Order of the British Empire (CBE) in the 1998 New Year Honours.He died on 9 February 2017.