William Sawyer may refer to:
William Sawyer (American politician) (1803–1877), American politician from Ohio William Sawyer (Canadian politician) (1815–1904), Canadian politician from Quebec William Sawyer (composer) (1953-1991), author of the musical Babes William Sawyer (cricketer) (1712–1761), 18th-century English cricketer William B. Sawyer (1886-1950), American physician from Florida William E. Sawyer (1850–1883), American inventor William James Sawyer (1870–1940), English accountant William Collinson Sawyer or Collinson Sawyer (1831–1868) Anglican bishop