| William W. Knight | |
| State House: | Pennsylvania |
| District: | 36th |
| Term Start: | 1979 |
| Term End: | 1980 |
| Predecessor: | Donald Abraham |
| Successor: | Robert Horgos |
| Birth Date: | 11 June 1913 |
| Birth Place: | Homestead, Pennsylvania, United States |
| Death Place: | Munhall, Pennsylvania, United States |
| Party: | Democratic |
William W. Knight (June 11, 1913 – February 1, 1987) was a Democratic member of the Pennsylvania House of Representatives.[1] [2] [3]