Notable people with given name Newton include:

• Newton (singer), stage name of Billy Myers (born 1967), British firefighter turned pop singer
• Newton Araújo da Costa Júnior (born 2000), Brazilian footballer
• Newton D. R. Allen (died 1927), American politician
• Newton D. Baker, American lawyer and politician
• Newton Cloud (1804–1877), American politician and Methodist minister
• Newton Collins (1819–1903), American businessman
• Newton da Costa, Brazilian mathematician, logician and philosopher
• Newton de Souza, Brazilian businessman
• Newton E. Mason (1850–1945), United States Navy officer
• Newton Earp (1837–1928), American Old West pioneer and soldier
• Newton Faulkner (born 1985), English singer-songwriter
• Newton "Newt" Gingrich (born 1943), American politician and author
• Newton W. McConnell (1832–1915), Chief Justice of the Territorial Montana Supreme Court
• Newton James Moore, the eighth Premier of Western Australia
• Newton Lee, American computer scientist, non-profit entrepreneur and author
• Newton N. Minow (1926–2023), American attorney, Chairman of the Federal Communications Commission 1961–1963
• Newton Santos de Oliveira (born 1976), Lebanese former footballer
• Newton J. Tharp (1867–1909), American architect and painter
• Newton Alonzo Wells (1852–1923), American visual artist and educator