James Wemyss may refer to:
James Wemyss, Lord Burntisland (died 1682), husband of Margaret Wemyss, 3rd Countess of Wemyss James Wemyss, 5th Earl of Wemyss (1699–1756), grandson of the preceding, Scottish peer James Wemyss (1726–1786), son of the preceding, Scottish MP James Erskine Wemyss (1789–1854), grandson of the preceding, Scottish admiral and MP James Hay Erskine Wemyss (1829–1864), son of the preceding, Scottish MP James Wemyss (New Zealand politician) (1828–1909), Member of Parliament in Nelson, New Zealand James Wemyss (British Army officer) (1748–1833), major during American Revolutionary War at Battle of Fishdam Ford
See also James Weams (1851–1911), aka James Wemyss, Durham comedian and singer/songwriter