Greenall is a British locational or topographical surname which has been abbreviated from Green Hollow/Hole, Green Hill or Green Halgh. Notable people with the surname include:

Colin Greenall (born 1963), English footballer Doug Greenall, English rugby league footballer and coach Sir Gilbert Greenall, 1st Baronet (1806–1894), English businessman and politician Gilbert Greenall, 1st Baron Daresbury (1867–1938), English businessman Margaret Greenall, English businesswoman Simon Greenall, British actor Fin Greenall, English singer-songwriter, producer and DJ

See also Greenall's, formerly a brewery in England Greenhalgh (disambiguation) Greenhill (disambiguation)