Ruth Williams (disambiguation)

Ruth Williams (1926–2005) was a baseball pitcher.

Ruth Williams may also refer to:
 * Ruth J. Williams, American statistician
 * Ruth Williams (badminton) (born 1989), Jamaican badminton player
 * Ruth C. Williams (1897–1962), Australian writer for children
 * Ruth Margaret Williams, British mathematician
 * Ruth Williams Cupp (1928–2016), American lawyer and legislator
 * Ruth Williams Khama (1923–2002), First Lady of Botswana from 1966 to 1980
 * Ruth Williams-Simpson (born 1949), Jamaican sprinter
 * Ruth Williams, character in 1940 American film noir Babies for Sale