John G. Smith may refer to:
John G. Smith (poet) (died 1891), 19th century Scottish poet John Gordon Smith (surgeon) (1792–1833), Scottish surgeon and professor of medical jurisprudence John Gordon Smith (politician) (1863–1921), member of the Queensland Legislative Council J. Gregory Smith (1818–1891), Governor of Vermont John G. Smith (coach) (1924–1998), American college baseball, football and basketball coach John Smith (Maine politician), Mayor of Saco, Maine and Ku Klux Klan supporter
See also John Smith (disambiguation)