William Dunn

William, Willie or Billy Dunn may refer to:
Sir William Dunn, 1st Baronet, of Clitheroe (1856–1926), British Conservative politician
Sir William Dunn, 1st Baronet, of Lakenheath (1833–1912), London banker, merchant and philanthropist, Liberal MP for Paisley
William Dunn (footballer) (1877–?), English footballer, played for Manchester United
William Dunn (industrialist) (1770–1849), mechanic and agriculturist
William Dunn (Medal of Honor) (1834–1902), American Civil War sailor
William Dunn (Northern Mariana Island footballer)
William Dunn (physician) (c. 1550–1607), English physician, President of Royal College of Physicians, see Lumleian Lectures
William Arthur Dunn (1875–1947) Methodist clergyman in South Australia
William E. Dunn (born 1926), former mayor of Murray, Utah, and county commissioner
William Henry Dunn (1841–1891), South Australian politician, son of John Dunn (miller)
William M. Dunn (1814–1887), U.S. Representative from Indiana
William R. Dunn (1916–1995), American World War II fighter pilot
William Thomas Dunn (1881–1962), All-American football player for Penn State
Willie Dunn (1942–2013), Canadian filmmaker, folk musician, playwright and politician
Billy Dunn (footballer, born 1865) (1865–1921), Scottish footballer with Stoke and other clubs
Billy Dunn (footballer, born 1910) (1910–1980), Scottish footballer with Celtic, Brentford, Southampton and other clubs
Billy Dunn (footballer, born 1920) (1920–1982), English footballer with Darlington

Fiction

• William Dunn, a fictional character in the Blue Tracer comic book series