The Surgeon of Crowthorne: A Tale of Murder, Madness and the Love of Words is a non-fiction history book by British writer Simon Winchester, first published in England in 1998. It was retitled The Professor and the Madman: A Tale of Murder, Insanity, and the Making of the Oxford English Dictionary in the United States and Canada.

Simon Winchester is a British-American author and journalist. In his career at The Guardian newspaper, Winchester covered numerous significant events, including Bloody Sunday and the Watergate Scandal. Winchester has written or contributed to over 30 nonfiction books, has written one novel, and has contributed to several magazines, among them Condé Nast Traveler, Smithsonian Magazine, and National Geographic.