De Grey

De Grey may refer to:
 * Places
 * De Grey, Western Australia
 * De Grey, South Dakota
 * People
 * Aubrey de Grey (born 1963), English gerontologist
 * Nigel de Grey (1886–1951), British codebreaker
 * Thomas de Grey (disambiguation)
 * Thomas de Grey (1680–1765), MP for Norfolk 1715–27
 * Thomas de Grey (1717–1781), MP for Norfolk 1764–74
 * Thomas de Grey, 2nd Baron Walsingham (1748–1818), MP for Wareham 1774, Tamworth 1774–80 and Lostwithiel 1780–81
 * Thomas de Grey, 2nd Earl de Grey (1781–1859), British Tory politician and statesman
 * Thomas de Grey, 4th Baron Walsingham (1788–1839), British peer
 * Thomas de Grey, 5th Baron Walsingham (1804–1870), British peer
 * Thomas de Grey, 6th Baron Walsingham (1843–1919), English politician and amateur entomologist


 * William de Grey, 1st Baron Walsingham (1719–1781)
 * de Grey, a variant of the surname, Grey (surname)