William Avery may refer to:
- Bill Avery (born 1942), Nebraska politician and professor
- William Avery (aviator) (1894–1956), who piloted the aircraft of Octave Chanute
- William Avery (basketball) (born 1979), American professional basketball player
- William Avery (businessman), co-founder of W & T Avery Ltd.
- Sir William Beilby Avery (1854–1908), philatelist, son of William Avery, and senior partner of W & T Avery Ltd.
- William H. Avery (politician) (1911–2009), former Governor of Kansas
- William H. Avery (engineer) (1912–2004), aeronautics engineer
- William Tecumsah Avery (1819–1880), former member of the United States House of Representatives
- William Waightstill Avery, (1816–1864), member of the Congress of the Confederate States from North Carolina
Famous quotes containing the word avery:
“Th-th-th-th-that’s all, folks!”
—Tex Avery [Fred Avery] (1907–1980)