Hugh Redwald Trevor-Roper, Baron Dacre of Glanton, FBA (15 January 1914 – 26 January 2003) was an English historian. He was Regius Professor of Modern History at the University of Oxford. Trevor-Roper was a polemicist and essayist on a range of historical topics, but particularly England in the 16th and 17th centuries and Nazi Germany. In the view of John Kenyon, "some of [Trevor-Roper's] short essays have affected the way we think about the past more than other men's books". This is echoed by Richard Davenport-Hines and Adam Sisman in the introduction to One Hundred Letters from Hugh Trevor-Roper (2014): "The bulk of his publications is formidable... Some of his essays are of Victorian length. All of them reduce large subjects to their essence. Many of them [...] have lastingly transforme