John M. Smith may refer to:

John M. Smith (politician, born 1872), American businessman and politician. John M. C. Smith (1853–1923), American politician John Manners Smith (1864–1920), Chief Commissioner of Ajmer-Merwara Frederick Smith (Conservative MP) (John Mark Frederick Smith, 1790–1874), British Army general and politician John M. Smith (rapist), (1925–1945), war criminal killed in the 1945 Katsuyama killing incident John Maynard Smith (1920–2004), British biologist John McGarvie Smith (1844–1918), Australian metallurgist John Montgomery Smith (1834–1903), American politician John Malcolm Smith (1922-1981), American naval aviator and World War II ace John M. Smith (bishop) (1935–2019), American Roman Catholic prelate John Moyr Smith (1839–1912), British artist

See also John Smith (disambiguation) Smith (disambiguation)