Harmsworth is a surname, and may refer to:
Alfred Harmsworth (barrister) (1837–1889), British lawyer Alfred Harmsworth, 1st Viscount Northcliffe (1865–1922), British newspaper and publishing magnate Cecil Harmsworth, 1st Baron Harmsworth (1869–1948), British businessman and Liberal politician Esmond Harmsworth, 2nd Viscount Rothermere (1898–1978), British Conservative politician and press magnate Fred Harmsworth (1877–after 1903), English footballer Harold Harmsworth, 1st Viscount Rothermere (1868–1940), British newspaper proprietor Sir Hildebrand Harmsworth, 1st Baronet (1872–1929), British newspaper proprietor Sir Hildebrand Harmsworth, 2nd Baronet (1901–1977), rentier Jonathan Harmsworth, 4th Viscount Rothermere (born 1967), British media man Leicester Harmsworth (1870–1937), British businessman and Liberal politician Mark Harmsworth, American politician Mary Harmsworth, Viscountess Northcliffe (1867–1963) Patricia Harmsworth, Viscountess Rothermere (1929–1992), English socialite and actress Paul Harmsworth (born 1963), British sprinter St John Harmsworth (1876–1933), English businessman Vere Harmsworth, 3rd Viscount Rothermere (1925–1998), British newspaper man
See also Harmsworth (disambiguation)