Sir Angus Frank Johnstone-Wilson, CBE, known as Angus Wilson (11 August 1913 – 31 May 1991), was an English novelist and short story writer. He was one of England's first openly gay authors. He was awarded the 1958 James Tait Black Memorial Prize for The Middle Age of Mrs Eliot and later received a knighthood for his services to literature.

Wilson was born in Bexhill, Sussex, England, to an English father and South African mother. He was educated at Westminster School and Merton College, Oxford, and in 1937 became a librarian in the British Museum's Department of Printed Books, working on the new General Catalogue. During World War II, he worked in the Naval section Hut 8 at the code-breaking establishment, Bletchley Park, translating Italian Naval codes. The work situation was stressful and led to a nervous breakdown.