John D. Smith (disambiguation)

John D. Smith is a former professor of Sanskrit at Cambridge.

John D. Smith may also refer to:


 * John David Smith (1786–1849), Canadian politician
 * John Derek Smith (1924–2003), British biologist
 * John Donnell Smith (1829–1928), American biologist
 * John Douglas Smith (born 1966), Canadian sound editor
 * John Donald Smith (1919–1997), Canadian politician in the Legislative Assembly of British Columbia
 * John Derby Smith (1812–1884), minister, physician, and Massachusetts state legislator