William Furness

William Furness may refer to:


 * William Henry Furness (1802–1896), American clergyman, theologian, and reformer
 * William Henry Furness Jr. (1827–1867), American portrait painter
 * William Henry Furness III (1866–1920), American physician, ethnographer and author
 * William Anthony Furness, 2nd Viscount Furness (1929–1995), British peer