de Gruchy is a surname. Notable people with the surname include:
Bill de Gruchy (born 1930), Australian sprinter Bill de Gruchy (footballer) (1877–1958), Australian rules footballer Geoffrey de Gruchy Barkas (1896–1979), British filmmaker and camoufleur Henry De Gruchy (1898–1952), Australian cricketer Jeanelle de Gruchy, British public health official John De Gruchy (born ), Canadian motorcycle racer John W. de Gruchy (born 1939), South African theologian Nigel de Gruchy (born 1943), British trade unionist Ray De Gruchy (1932–2025), British footballer from Jersey