William Gillies

William Gillies may refer to:


 * William Gillies (Australian politician) (1868–1928), Premier of Queensland in 1925
 * William Gillies (Scottish politician) (1865–1932), co-founder of the National Party of Scotland
 * William Gillies (sport shooter) (1914–1986), Scottish shooter who represented Hong Kong at the Olympics
 * William George Gillies (1898–1973), Scottish landscape and still life painter
 * William S. Gillies (1911–2000), United States artist
 * William King Gillies (1875–1952), Scottish educator and academic author