William Gill

William, Will, Bill, or Billy Gill may refer to:

Arts and entertainment

 * William Ward Gill (1823–1894), English painter, brother of Edmund Marriner Gill
 * William Henry Gill (composer) (1839–1923), Manx composer
 * William Gill (dramatist) (1842–1919), American actor and playwright; author of Broadway's first hit musical, Adonis
 * William Gill (photographer) (1854–1912), British photographer
 * W. Walter Gill (William Walter Gill, 1876–1963), Manx scholar, folklorist and poet
 * Will Gill (born 1968), Canadian artist

Sports

 * Billy Gill (1876–1930), Australian rules footballer
 * Bill Gill (soccer) (1919–?), Canadian soccer goalkeeper
 * William Gill (boxer) (fl. 2007–2009), American boxer

Others

 * William Gill (sea captain) (1795–1858), Manx master mariner
 * William Wyatt Gill (1828–1896), English missionary
 * William Gill (explorer) (1843–1882), British explorer and intelligence gatherer, companion of William Mesny
 * William H. Gill (1886–1976), U.S. Army general
 * William Henry Gill (ethnographer) (1861–1944), Australian ethnographer
 * William Smith Gill (1865–1957), Scottish Volunteer Force officer and paint manufacturer
 * William R. Gill, American diplomat