James Dennis

James Dennis may refer to:
 * James Dennis, 1st Baron Tracton (1721–1782), lord chief baron of the Exchequer in Ireland
 * James Dennis (athlete) (born 1976), American discus thrower
 * James Blatch Piggott Dennis (1815–1861), British paleontologist
 * James L. Dennis (born 1936), American judge
 * James U. Dennis (1823–1900), American politician and lawyer