William Boyd may refer to:
- William Boyd, 3rd Earl of Kilmarnock (died 1717), Scottish nobleman
- William Boyd, 4th Earl of Kilmarnock (1704–1746), Scottish nobleman
- William Boyd (minister) (died 1772), Irish Presbyterian minister
- William Boyd (pathologist) (1885–1979), Scottish-Canadian professor and author
- William Boyd (actor) (1895–1972), American actor, better known as "Hopalong Cassidy"
- William Boyd (writer) (born 1952), Scottish novelist and screenwriter
- William Boyd (colonel), US Army Air Forces base commander, referenced in Freeman Field Mutiny
- William C. Boyd (1903–1983), American immunologist
- William "Stage" Boyd (1889–1935), American actor
- Bill Boyd (poker player) (1906–1997), professional poker player
- Bill Boyd (baseball) (1852–1912), Major league baseball player
- Bill Boyd (Canadian politician), Saskatchewan Party MLA for the constituency of Kindersley
- Bill Boyd (musician) (1910–1977), leader of the 1930s Western swing band, Bill Boyd and the Cowboy Ramblers
- Will Boyd (born 1979), American bass guitarist for the band Evanescence
Famous quotes containing the word boyd:
“Unhappy is the man for evermair
That tills the sand and sawis in the air;
But twice unhappier is he, I lairn,
That feidis in his hairt a mad desire
And follows on a woman thro the fire,
Led by a blind and teachit by a bairn.”
—Mark Alexander Boyd (1563–1601)