Margaret Nairne Mellis (22 January 1914 – 17 March 2009) was a British artist, one of the early members and last survivors of the group of modernist artists that gathered in St Ives, in Cornwall, in the 1940s. She and her first husband, Adrian Stokes, played an important role in the rise of St Ives as a magnet for artists. She later married Francis Davison, also an artist, and became a mentor to the young Damien Hirst.