William Avery
William Avery is the name of the following people:
- William Avery (basketball player) (born 1979), American basketball player
- William H. Avery (1911–2009), American politician (Republican)
- William Hinckley Avery (1912-2004), American aerospace engineer
- William Tecumsah Avery (1819–1880), American politician
- William Waightstill Avery (1816–1864), American politician
