James Gray may refer to: - Sir James Gray, 1st Baronet (1667–1722), armiger and merchant-Burgess of Edinburgh
- Sir James Gray, 2nd Baronet (c.1708–1773), diplomat and antiquary
- The male pseudonym of Hannah Snell (1723–1792)
- James Martin Gray (1851–1935) pastor, Bible scholar, hymn writer, and president of Moody Bible Institute
- Jim Gray (baseball) (1862–1938), professional baseball infielder from 1884–1893 with Pittsburgh.
- Sir James Gray (zoologist) (1891–1975), Fellow of the Royal Society, won Royal Medal in 1948, knighted in 1954
- James H. Gray (1906–1998), Canadian journalist, historian and author
- James Lorne Gray (1913–1987), Canadian, president of Atomic Energy of Canada Limited
- Jimmy Gray (cricketer) (born 1926), played for Hampshire from 1948 to 1966
- James L. Gray (born 1926), Scottish turbine design engineer
- James K. Gray (born 1933), Canadian energy entrepreneur
- Jim Gray (computer scientist) (1944–lost at sea January 28, 2007), American computer scientist and Turing Award recipient
- James P. Gray (born 1945), judge and Libertarian U.S. Senate candidate
- Jimmy Lee Gray (1949–1983), American murderer and first man to be executed in Mississippi since the death penalty was reinstated
- James Gray (British politician) (born 1954), British politician
- Jim Gray (UDA member) (1958–2005), deceased leader of the Ulster Defence Association
- Jim Gray (sportscaster), American sportscaster
- James Gray (film director) (born 1969), American filmmaker
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