Darby is usually a girl as well as a boy's name. It is pronounced as DAR-bee. It is an Irish as well as Old English origin, which means "without envy; park with deer" or even a "free man". The variants of this name are Darbey, Darbie and Derby. Darby is even a very common surname. The notable personalities with this surname are Abraham Darby I (British ironmaster), George Andrew Darby (engineer and inventor), Kim Darby (American actress), Rhys Darby (New Zealand comedian), William Orlando Darby (U.S. Army officer), Séamus Darby (Irish Gaelic footballer), Newman Darby (American inventor), to name a few.