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:
“We all want to be happy, and we’re all going to die.... You might say those are the only two unchallengeably true facts that apply to every human being on this planet.”
—William Boyd (b. 1952)