Guy Longfield Willatt (7 May 1918 – 11 June 2003) was an English cricketer who played first-class cricket for Cambridge University from 1938 to 1947, for Nottinghamshire from 1939 to 1948, for Scotland from 1948 to 1950 and for Derbyshire from 1950 to 1956. He was captain of Derbyshire from 1951 to 1954 and also played for Marylebone Cricket Club (MCC). On leaving university he moved to Edinburgh, where he taught at Edinburgh Academy and scored for The Grange. While he was in Scotland from 1948 to 1950 he played four times for Scotland.