William Smyth
William Smyth is the name of the following people:
- William Smyth (Bishop) (1460–1514), English clergyman, Bishop of Lincoln
- William Smyth (historian) (1765–1849), English poet and historian
- William Smyth (mathematician) (1797–1868), American mathematician
- William Smyth (politician) (1824–1870), American politician
- William Henry Smyth (1788–1865), English astronomer
- William Ross Smyth (1857–1932), Canadian politician
See also: