William Seymour may refer to:William Seymour, MP for Herefordshire William Digby Seymour (1805–1872), MP for Kingston-upon-Hull William Digby Seymour (1822–1895), QC, lawyer and poet, MP for Sunderland and Somerset William H. Seymour (1840–1913), American politician William J. Seymour (1870–1922), American Pentecostal minister William Kean Seymour (1887–1975), British writer William Seymour Jr. (1818–1882), American banker who twice served as president of the New York Stock Exchange William Seymour (Congressman) (1775–1848), US representative from New York from 1835 to 1837 William Seymour (1664–1728), lieutenant-general, MP for Cockermouth, Totnes and Newport William Seymour, 2nd Duke of Somerset (1588–1660) William Seymour, 3rd Duke of Somerset (1652–1671) William Seymour Tyler (1810–1897), American historian William Henry Seymour (1829–1921), British Army officer Lord William Seymour (1838–1915), senior British Army officer