John S. Williams may refer to: John Sam Williams (born 1966), American basketball player John Scott Williams (1893–1944), Canadian air force officer John Sharp Williams (1854–1932), US Senator from Mississippi and Minority Leader of the House of Representatives John Sibley Williams (born 1978), American poet and fiction writer John Skelton Williams (1865–1926), American Comptroller of the Currency John Stewart Williams (1911–1964), English cricketer John Stuart Williams (1818–1898), American Confederate general and US Senator from Kentucky
See also John Williams (disambiguation) John Stewart Williamson (1908–2006), American science fiction writer John Suther Williamson ( – 1836), British army officer