Haswell is a surname. Notable people with the surname include:
Anthony Haswell (passenger rail advocate)Anthony Haswell (printer) (1756–1816), English immigrant to New EnglandCharles Haynes Haswell (1809–1907), American nautical engineer, politician and authorJohn Haswell (1812–1897), Scottish-Austrian locomotive design engineerKeeley Halswelle (1831-1891), born John Keeley Haswell, British artistPercy Haswell (1871–1945), American actressRob Haswell (born 1971), Canadian meteorologistRobert Haswell (1768–1801?), American maritime trader and naval officerRussell Haswell (born 1970), British multidisciplinary artistSusanna Rowson (1762–1824), born Susanna Haswell, British-American actress, novelist and educatorThomas Haswell (1807–1889), British educator and music composerWilliam Aitcheson Haswell (1854–1925), Scottish-Australian zoologist