Helliwell is a surname. Notable people with the surname include:
David Helliwell (born 1935), Canadian rower
Ian Helliwell (filmmaker), audio visual artist based in Brighton, England
Ian Helliwell (footballer) (born 1962), English former footballer who played as a striker
John Helliwell (born 1945), English musician: saxophonist, keyboardist and woodwind player for the rock band Supertramp
Luke Helliwell (born 1988), rugby league player for the York City Knights
Robert Helliwell (1920–2011), electrical engineer and professor at Stanford University
Sid Helliwell (1904–1939), professional footballer
Wade Helliwell (born 1978), Australian professional basketball player