William Byrd (circa 1540–1623) was an English composer.
William Byrd may also refer to:
William Byrd I (1652–1704), Virginia colonist William Byrd II (1674–1744), colonial Virginia planter, author, and founder of Richmond William Byrd III (1728–1777), American racehorse owner Bill Byrd (William Byrd, 1907–1991), American professional baseball player William Byrd Traxler Jr. (born 1948), federal judge on the U.S. Court of Appeals for the Fourth Circuit William Byrd, African-American man who was lynched in Brentwood, Georgia on May 28, 1922, see lynching of William Byrd William A. Bird, often spelled Byrd, state legislator in Florida William M. Byrd (1819–1874), justice of the Supreme Court of Alabama Billy Byrd (1920–2001), American guitarist and session musician SS William Byrd, a Liberty ship
See also Willie Byrd (born 1983), American football player William Byrd Hotel William Byrd High School William Byrd Community House William Bird (disambiguation)