James Tennant may refer to:
James Tennant (mineralogist) (1808–1881), English mineralogist James Tennant (RFC officer) (1896–?), Scottish World War I flying ace James Tennant (army officer) (1789–1854), British soldier James Francis Tennant (1829–1915), British soldier and astronomer Jim Tennant (1907–1967), American baseball player
See also James Tennent (1888–1955), Scottish international rugby and cricket player James Emerson Tennent (1804–1869), Irish politician and traveller