| William Gellibrand | |
| Office: | Member of the Tasmanian House of Assembly for Fingal |
| Term Start: | 11 September 1871 |
| Term End: | September 1872 |
| Predecessor: | John Swan |
| Successor: | Adye Douglas |
| Office2: | Member of the Tasmanian House of Assembly for Ringwood |
| Term Start2: | 9 May 1874 |
| Term End2: | July 1886 |
| Predecessor2: | Alexander Clerke |
| Successor2: | Seat abolished |
| Birthname: | William St Paul Gellibrand |
| Birth Date: | 1823 12, df=yes |
| Birth Place: | At sea |
| Death Place: | Hobart, Tasmania |
William St Paul Gellibrand (18 December 1823 – 22 August 1905) was an Australian politician.
Gellibrand was born at sea in 1823. In 1871 he was elected to the Tasmanian House of Assembly, representing the seat of Fingal, but he was defeated the following year. He returned in 1874 as the member for Ringwood, serving until 1886. He died in 1905 in Hobart.[1]