James Templer may refer to:
James Templer (balloon aviator) (1846–1924), early British military pioneer of balloons James Templer (civil engineer) (1722–1782), self-made magnate and civil engineer James Templer (canal builder) (1748–1813), Devon landowner and builder of the Stover Canal James Templer (equestrian) (1936–2023), British Olympic equestrian