John Knowles (1926–2001) was an American novelist.
John Knowles may also refer to:
John Knowles (antitrinitarian) ( 1646–1668), English antitrinitarian preacher John Knowles (English author) (1781–1841), arts and naval writer, biographer of Fuseli John Knowles (Manchester) (1810–1880), English businessman John Knowles (guitarist) (born 1942), American acoustic guitarist John Knowles (American politician), New Hampshire state legislator John Power Knowles (1808–1887), U.S. federal judge John Cunningham Knowles (1894–1977), politician in Saskatchewan, Canada John Ward Knowles (1838–1931), stained-glass manufacturer and commentator on art and music John Hilton Knowles (1926–1979), American cardiopulmonary physiologist and physician John Evans Knowles (1914–2011), Canadian politician David Knowles (footballer) (John David Knowles, 1941–2011), English footballer John Knowles (zoologist), founder of Marwell Wildlife John Knowles (sport shooter) (born 1947), Scottish sport shooter
See also Jack Knowles (disambiguation)