| William Cooper | |
| Office: | Speaker of the Legislative Assembly of Prince Edward Island |
| Term Start: | 1839 |
| Term End: | 1842 |
| Predecessor: | George R. Dalrymple |
| Successor: | Joseph Pope |
| Citizenship: | Canadian |
| Profession: | Politician |
William Cooper was the speaker of 15th Legislative Assembly of Prince Edward Island from 1839 to 1842.[1] He was the speaker during all the five sessions of the assembly.