Haddow is a surname, of Scottish origin. 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 (1872–1943), Scottish footballer Johnny Haddow, Scottish footballer and manager Kris Haddow, Scottish writer Ross Haddow (1896–1973), businessman and politician from Glasgow William Martin Haddow (1865–1945), Scottish socialist