Justin Harvey Smith (born January 13, 1857, Boscawen, New Hampshire; died March 21, 1930, Brooklyn, New York) was an American historian and specialist on the Mexican–American War.
Smith worked for Charles Scribner's Sons publishers 1881–1883 and Ginn & Co. 1883–1898 (becoming a partner in 1890); he was Professor of Modern History at Dartmouth 1899–1908.
He resigned his professorship in 1908 to pursue historical research, and published The Annexation of Texas in 1911 and The War with Mexico in 1919.
Smith's papers were donated to the Latin American collection of the University of Texas library, (now the Benson Latin American Collection, by a book dealer, Michael M. Russel, who had acquired them.
[4] On May 22, 1892, Smith married Mary Ellen Barnard in Boston, Massachusetts;[5] they divorced in 1895.