John Michael Wallace-Hadrill CBE (29 September 1916 – 3 November 1985) was Professor of Mediaeval History at the University of Manchester (1955-61), a Senior Research Fellow of Merton College in the University of Oxford (1961-74), Chichele Professor of Modern History, University of Oxford (1974-83) and a Fellow, All Souls College, Oxford (1974-85). He was elected a Fellow of the British Academy in 1969 and delivered the Ford Lectures in 1971. He was President of the Royal Historical Society (1976-80) and was appointed a Commander of the Order of the British Empire (CBE) in 1982.
Michael Wallace-Hadrill was one of the foremost historians of the early Merovingian period. His son is the Roman historian Andrew Wallace-Hadrill.