Grey \g-rey\ as a boy's name is a variant of Gray (Old English), and the meaning of Grey is "gray-haired". The baby name Grey sounds like Garey, Crew, Carey, Corey, Cree, Croy, Gaer, Gary, Garry, Garrey, Gery, Gearey, Gerry, Gere, Gore, Graye, Gerrey and Korey. Other similar baby names are Frey, Greg and Trey. View a list of the 3 names that reference Grey.