| Joseph Preston Jr. | |
| State House: | Pennsylvania |
| District: | 24th |
| Term Start: | January 4, 1983 |
| Term End: | 2013 |
| Predecessor: | William W. Pendleton |
| Successor: | Ed Gainey |
| Party: | Democratic |
| Birth Date: | May 28, 1947 |
| Birth Place: | Vandergrift, Pennsylvania |
| Alma Mater: | University of Pittsburgh |
| Occupation: | Businessman |
| Spouse: | Odelfa Preston |
| Residence: | Pittsburgh, Pennsylvania |
Joseph Preston Jr. (born May 28, 1947) is a former Democratic member of the Pennsylvania House of Representatives for the 24th District, elected in 1982.
Preston was unseated in 2012 by former aide Ed Gainey, who won the 2012 primary against Preston.[1]