Katherine, Katharine, Kathryn or Kathy Williams may refer to: Katharine Isabella Williams (1848–1917), British chemist Kath Williams (1895–1975), Australian women's activist Katharine Williams, Australian judge Kathryn Williams (born 1974), English singer-songwriter Kathy Williams, a character in The Fog See also Catharine R. Williams (1787–1872), American writer and suffragist Kathryn Harby-Williams (born 1969), Australian netball player and television presenter Katherine Dienes (born 1970), also known as Katherine Dienes-Williams, a New Zealand-born organist and conductor Katie Williams (disambiguation) Kate Williams (disambiguation) Williams (surname)