William Hewitt
William Hewitt may refer to:
- W. A. Hewitt (1875–1966), Canadian sports executive and journalist
- William Alexander Hewitt, former executive at John Deere
- William Hewitt (minister) (born 1951), Moderator of the General Assembly of the Church of Scotland
- William Henry Hewitt, South African recipient of the Victoria Cross
- William Hewitt (cricketer) (1795–1870), English cricketer
- William Wells Hewitt (1898–1966), English organist and composer