| William W. Foster | |
| State House: | Pennsylvania |
| District: | 139th |
| Term Start: | 1971 |
| Term End: | 1984 |
| Predecessor: | J. Russell Eshback |
| Successor: | Jerry Birmelin |
| Birth Date: | 22 July 1922 |
| Birth Place: | Cherry Ridge Township, Wayne County, Pennsylvania[1] |
| Death Place: | Honesdale, Pennsylvania |
| Party: | Republican |
William Walter Foster (July 22, 1922 – January 25, 2000) was a former Republican member of the Pennsylvania House of Representatives.[2]