Grim's Dyke (sometimes called Graeme's Dyke until late 1891) is a house and estate in Harrow Weald, in northwest London, England. The house was built from 1870 to 1872 by Richard Norman Shaw for painter Frederick Goodall and named after the nearby prehistoric earthwork known as Grim's Ditch. It was converted into a hotel, Grim's Dyke Hotel, in 1970.