Henry Johnston or Johnstone may refer to: Henry S. Johnston (1867–1965), American politician and lawyer, 7th Governor of Oklahoma Henry Johnston (footballer), English soccer player of the 1920s Henry Johnston (Irish politician) (1908–1991), Irish Fianna Fáil politician from Meath Henry Johnstone Jr. (1920–2000), American philosopher and rhetorician Henry Erskine Johnston (1777–1830), Scottish actor Henry Halcro Johnston (1856–1939), Scottish botanist, physician and rugby union player Henry Johnston, Lord Johnston (1844–1931), Scottish judge Henry James Johnstone (1835–1907), portrait photographer in Melbourne, Australia