Oliver Heaviside (1850–1925) was a mathematician and physicist.
Heaviside may also refer to:
Science Heaviside (lunar crater) Heaviside (Martian crater) Heaviside condition Heaviside cover-up method Heaviside layer or Kennelly–Heaviside layer Heaviside step function Heaviside's dolphin, named in honour of 19th-century mariner Captain H(e)aviside
People John Heaviside (footballer) (born 1943), English footballer John Heaviside Clark (c. 1771–1836), Scottish artist Michael Heaviside (1880–1939), Victoria Cross recipient Oliver Heaviside (1850-1925), English electrical engineer
Others Heaviside, an electric-powered aircraft under development by the Kitty Hawk Corporation