Haswell is a surname. Notable people with the surname include:
Anthony Haswell (passenger rail advocate)
Anthony Haswell (printer) (1756–1816), English immigrant to New England
Charles Haynes Haswell (1809–1907), American nautical engineer, politician and author
John Haswell (1812–1897), Scottish-Austrian locomotive design engineer
Keeley Halswelle (1831-1891), born John Keeley Haswell, British artist
Percy Haswell (1871–1945), American actress
Rob Haswell (born 1971), Canadian meteorologist
Robert Haswell (1768–1801?), American maritime trader and naval officer
Russell Haswell (born 1970), British multidisciplinary artist
Susanna Rowson (1762–1824), born Susanna Haswell, British-American actress, novelist and educator
Thomas Haswell (1807–1889), British educator and music composer
William Aitcheson Haswell (1854–1925), Scottish-Australian zoologist
