| William K. Klingaman, Sr. | |
| State House: | Pennsylvania |
| District: | 124th |
| Term Start: | 1973 |
| Term End: | 1985 |
| Predecessor: | Frank M. Allen |
| Successor: | Dave Argall |
| Birth Date: | 14 December 1916 |
| Birth Place: | Tamaqua, Pennsylvania, U.S. |
| Death Date: | [1] |
| Death Place: | Philadelphia, Pennsylvania, U.S. |
| Party: | Republican |
William K. Klingaman, Sr. (December 14, 1916 – August 13, 1991) was a former Republican member of the Pennsylvania House of Representatives.[2]