Sir Bryan Harold Cabot Matthews, CBE, FRS (14 June 1906 – 23 July 1986) was Professor of Physiology, Cambridge University 1952–1973, Emeritus professor thereafter and Life Fellow of King's College, Cambridge.Sir Bryan Harold Cabot Matthews, CBE, FRS (14 June 1906 – 23 July 1986) was Professor of Physiology, Cambridge University 1952–1973, Emeritus professor thereafter and Life Fellow of King's College, Cambridge.
His elder brother was the zoologist Leonard Harrison Matthews.