Sir Denis Thatcher, 1st Baronet, MBE, TD, CStJ (10 May 1915 – 26 June 2003) was an English businessman and the husband of Margaret Thatcher, who served as the first female British prime minister from 1979 to 1990; in turn, he became the first male prime ministerial spouse. Thatcher was granted the Thatcher baronetcy in 1990, the only baronetcy created since 1964, and remains the most recent commoner to have been awarded a hereditary title.