William Sewell may refer to:
William H. Sewell (1909–2001), United States sociologist William H. Sewell Jr. (born 1940), American academic William J. Sewell (1835–1901), Union Army officer and Senator from New Jersey William Sewell (author) (1804–1874), English divine and author William Sewell (cricketer) (died 1862), English cricketer William Sewell (poet) (1951–2003), New Zealand poet William Sewell (trade unionist) (1852–1948), British trade unionist William Sewell (veterinary surgeon) (1781–1853), principal of the London Veterinary College William Arthur Sewell (1903–1972), university professor of English William Elbridge Sewell (1851–1904), United States Navy officer William Henry Sewell (died 1862), British Army officer
See also Bill Sewell (disambiguation)