John D. Smith is a former professor of Sanskrit at Cambridge.
John D. Smith may also refer to:
John David Smith (Upper Canada politician) John David Smith (Ontario politician) John Day Smith (1845–1933), American lawyer and politician John Smith (basketball, born 1969) (John David Smith), American college basketball coach John Smith (rugby league) (John David Smith), New Zealand rugby league player 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