Daphne Hardy Henrion (20 October 1917 – 31 October 2003) was a British sculptor, a member of the Royal Society of British Sculptors and an intimate of the writer Arthur Koestler.
She was born Daphne Hardy in 1917 in Amersham, Buckinghamshire, to Major Clive Hardy, a diplomat and translator at the International Court of Justice, and his wife Judith. Between 1923 and 1931 she was educated in The Hague, at French and German schools. She left school aged 14 to study art privately in the Netherlands for a year with Marian Gobius and Albert Termote. From 1934 to 1937 she attended the Royal Academy Schools in London. In 1937 she won the school's gold medal and travelling scholarship which took her in 1938 to France and Italy.
In the summer of 1939 in Paris, through mutual friends she met the Hungarian writer Arthur Koestler and they became close. Her life with him just before and after the outbreak of the Second World War is described in Koestler's autobiography Scum of the