William Deacon

William Deacon may refer to:
 * William Deacon (politician) (1872–1943), member of the Queensland Legislative Assembly
 * William Deacon (cricketer) (1828–1903), English cricketer and banker
 * William Arthur Deacon (1890–1977), Canadian literary critic and editor
 * William Frederick Deacon (1799–1845), English author and journalist
 * Bill Deacon (1944–2019), New Zealand rugby league player