John S. Williams

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