Susan or Sue Grey or Gray may refer to:
Susan Grey, Countess of Kent (born 1554), English aristocrat Susan McGreivy (née Gray, 1939–2019), American swimmer and activist Sue Gray, Baroness Gray of Tottenham (born 1957), British civil servant and special adviser Dame Sue Gray (RAF officer) (born 1963), British air marshal Sue Grey (lawyer) (born 1962/63), New Zealand antivaxxer Susan Grey, fictional character in Grey's Anatomy
See also Suzanne Gray, British meteorologist