Sir Arnold Whittaker Wolfendale FRS (25 June 1927 – 21 December 2020) was a British astronomer who served as the fourteenth Astronomer Royal from 1991 to 1995. He was Professor of Physics at Durham University from 1965 until 1992 and served as president of the European Physical Society (1999–2001). He was President of the Royal Astronomical Society from 1981 to 1983.