James, Jim, or Jimmy Simpson may refer to: James Simpson (advocate) (1781–1853), Scottish advocate and author James Simpson (British Army officer) (1792–1868), general of the British Army James Simpson (civil servant) (c. 1792–1857), early Australian civil servant and property developer James Simpson (engineer) (1799–1869), president of the Institution of Civil Engineers, 1853–1855 James Simpson (explorer) (1911–2002), polar explorer James Simpson (government official), New Jersey Department of Transportation commissioner and former Federal Transit Administrator for the United States DOT James Simpson (minister), Moderator of the General Assembly of the Church of Scotland James Simpson (priest) (1865–1948), Dean of Peterborough, 1928–1942 James B. Simpson (1927–2002), American journalist and Episcopal priest, known for Simpson's Contemporary Quotations James E Simpson Jr (1928–1999), Kentucky politician James H. Simpson (1813–1883), surveyor of the American West for the U.S. Army. James Jenkins Simpson, British entomologist and marine biologist James Young Simpson (1811–1870), Scottish doctor and pioneer in use of chloroform as anaesthetic James Young Simpson (scientist) (1873–1934), Scottish professor of natural science and a diplomat; great nephew of the above Jim Simpson (director) (born 1956), American theatre and film director Jimbo Simpson, Northern Irish paramilitary Jimmi Simpson (born 1975), American actor William James Simpson (born 1954), commonly known as James Simpson, Australian academic