Michael John Bentley (born 12 August 1948) is an English historian of British politics in the nineteenth and early twentieth centuries. He is Emeritus Professor of Modern History at the University of St Andrews and is currently Senior Research Fellow in History at St Hugh's College, Oxford. He is the biographer of the historian Herbert Butterfield, a former Master of Peterhouse, Cambridge.
Bentley was born in Rotherham, South Yorkshire, in 1948, the son of Peter and Jessie Bentley. He attended the University of Sheffield, graduating with a Bachelor of Arts degree in history in 1969, before proceeding to postgraduate study at St John's College, Cambridge.
From 1977 to 1995 Bentley taught history at Sheffield. He then moved to the University of St Andrews, where he was appointed professor of modern history; he is now emeritus. As of 2021, he is senior research fellow and stipendiary lecturer in history at St Hugh's College, Oxford. In 2011 he was made a fellow of the Royal Historical Society.
Boyd Hilton has called Bentley's Politics Without Democracy 1815âÂÂ1914 "a wonderfully 'inside' account of life at the top", whilst K. Theodore Hoppen claims the book "provides an interesting (if allusive) study of attitudes".
Bentley is married to the historian Sarah Foot.