Haycock is a surname. Notable people with the surname include:
Alexander Haycock (1882–1970), British politician D. Arthur Haycock (1916–1994), American secretary with the LDS Church David Boyd Haycock (born 1968), British writer Fred Haycock (1886–1955), English footballer Joseph Longford Haycock (1850–1937), Canadian farmer and politician Myfanwy Haycock (1913–1963), Welsh poet Obed Crosby Haycock (1901–1983), American scientist Pete Haycock (1951-2013), English musician