Ronald Edward Harris (born 13 November 1944 in Hackney, London, England), known by the nickname "Chopper", is a former English footballer who played for Chelsea in the 1960s and 1970s.
Harris is widely regarded as one of the toughest defenders of his era – along with players such as Tommy Smith and Norman Hunter – hence the nickname.
His brother Allan Harris was also a professional footballer and they were teammates at Chelsea in the mid-1960s.