| William Smyth | |
| Constituency Am1: | Gympie |
| Assembly1: | Queensland Legislative |
| Term Start1: | 7 September 1883 |
| Term End1: | 11 March 1899 |
| Predecessor1: | John Hamilton |
| Successor1: | George Ryland |
| Alongside1: | Matthew Mellor, Andrew Fisher, Jacob Stumm |
| Birth Date: | 13 May 1846 |
| Birth Place: | Sydney, New South Wales, Australia |
| Death Place: | London, England |
| Resting Place: | Brookwood Cemetery |
| Birthname: | William Smyth |
| Nationality: | English Australian |
| Party: | Ministerial |
| Spouse: | Margaret Moore, Nellie Warner (m.1892) |
| Occupation: | Company director |
William Smyth (1846–1899) was a politician in Queensland, Australia. He was a Member of the Queensland Legislative Assembly for Gympie. He was mayor of Gympie from 1883 to 1884.[1] He built and occupied 30 Lady Mary Terrace, Gympie.