John Cornwall

John Cornwall is the name of:


 * John Cornwall (died 1414), MP for Shropshire
 * John Cornwall, 1st Baron Fanhope (died 1443), English nobleman, soldier and one of the most respected chivalric figures of his era
 * John Cornwall (died 1608), MP for Marlborough (UK Parliament constituency)
 * John Cornwall (Upper Canada politician), farmer and political figure in Upper Canada
 * John Cornwall (South Australian politician) (1935–2018), former member of the South Australian Legislative Council