Heneghan is a surname of Irish origin. Notable people with the surname include:
Barry Heneghan, Irish politician Ben Heneghan (born 1993), English professional footballer Carl Heneghan (born 1968), British physician and epidemiologist Elizabeth Heneghan, Canadian judge Jack Heneghan (born 1996), American football player James Heneghan (1930–2021), British-Canadian author John Heneghan (1881–1945), Irish priest, editor and missionary Judith Heneghan (born 1965), British writer and university lecturer Margaret Heneghan (born 1959), Irish judge Martin Heneghan (born 1991), Irish darts player Róisín Heneghan (born 1963), Irish architect and designer
See also Hennigan, surname