William Hayes

William Hayes may refer to:

In politics

William Hayes (Irish politician), Irish Sinn Féin politician
William Hayes (Canadian politician) (1879–1939), member of the Legislative Assembly of Alberta
William P. Hayes (1866–1940), American lawyer and mayor of Springfield, Massachusetts

William Hayes (American football) (born 1985), American football player
William Hayes (Australian cricketer) (1883–1926), Australian cricketer
William Hayes (New Zealand cricketer) (1890-1972), New Zealand cricketer
William Hayes (diver) (born 1968), Canadian Olympic diver
William Hayes (rugby league), rugby league footballer of the 1930s and 1940s
William Hayes (wrestler) (1891–?), British wrestler
Willie Hayes (basketball) (born 1967), American college basketball head coach
Willie Hayes (1928–2014), Irish footballer
Will Hayes (Australian footballer) (born 1995), Australian footballer
William Hayes (sprinter), American sprinter, 3rd in the 220 yards at the 1922 USA Outdoor Track and Field Championships

William Hayes (composer) (1708–1777), organist, conductor, writer
William Hayes (geneticist) (1913–1994), Irish-born microbiologist and geneticist
William Hayes (pastoralist) (1827–1913), Australian pastoralist
William Hayes (photographer) (1871–1940), Victorian photographer in York, England
William C. Hayes (1903–1963), American Egyptologist
William Prine Hayes (1919–2009), Canadian commodore and educator
William Q. Hayes (born 1956), U.S. federal judge
William Hayes (academic) (1930–2025), president of St John's College, Oxford
Billy Hayes (writer) (born 1947), American writer
Bully Hayes (William Henry Hayes, 1827/29–1877), American ship's captain and trader
J. William Hayes (1921–1992), American entertainment lawyer
Harm (comics) (William Hayes), fictional supervillain from DC Comics