Moore is an English and Scottish surname, derived from the Old English word “mor”, meaning “open land” or “marsh”. It was a common name for people who lived near such areas. The name can also be traced back to the Gaelic word “mór”, meaning “great” or “big”. Notable people with the surname include British actress Julianne Moore, American filmmaker Michael Moore, and English poet Thomas Moore. The name has also been used in various fictional works, including the character James Bond’s boss, M, whose full name is Olivia Mansfield (née Moore).