| William Sidebottom | |
| Office: | Member of the Tasmanian House of Assembly for Selby |
| Term Start: | 25 February 1885 |
| Term End: | December 1893 |
| Predecessor: | Charles Grubb |
| Successor: | Frank Archer |
| Birth Date: | 1836 2, df=yes |
| Birth Place: | Evandale, Van Dieken's Land |
| Death Place: | Launceston, Tasmania |
William Sidebottom (5 February 1836 – 28 June 1932) was an Australian politician.
Sidebottom was born in Evandale in Tasmania in 1836. In 1885 he was elected to the Tasmanian House of Assembly, representing the seat of Selby. He served until 1893. He died in 1932 in Launceston.[1]