Castle Green may refer to:
Castle Green, London, a suburb in Barking Castle Green railway station, a proposed station Castle Green, South Yorkshire, England; see List of United Kingdom locations: Car-Cd Castle Green, Surrey, England, a small settlement near Chobham Castle Park, Bristol, England, a public open space Castle Green, the second building in the Hotel Green complex in Pasadena, California
See also Castle Green House, a listed building by Cardigan Castle, Wales