Haddow is a surname. Notable people with the surname include:
Alex Haddow (born 1982), English footballer
Alexander John Haddow (1912–1978), Scottish entomologist
David Haddow (1869-?), Scottish footballer
Donald Haddow (born 1970), Canadian swimmer
George Haddow (1833–1919), Canadian politician
James Haddow, Scottish footballer
Johnny Haddow, Scottish footballer and manager
Ross Haddow (1896–1973), businessman and politician from Glasgow
William Martin Haddow (1865–1945), Scottish socialist
