| Office: | Member of Parliament for Queen's County Ossory |
| Term Start: | 1900 |
| Term End: | 1916 |
| Predecessor: | Eugene Crean |
| Successor: | John Lalor Fitzpatrick |
| Birth Date: | 1855 |
| Death Date: | 7 March |
William P. Delany (1855 – 7 March 1916) was an Irish Member of Parliament (MP) representing Queen's County Ossory, from 1900 to 1916.[1] He was one of the founders of the United Irish League.