| Paul J. Gannon | |
| Birth Date: | 21 May 1960 |
| Birth Place: | Boston, Massachusetts |
| State House1: | Massachusetts |
| District1: | 4th Suffolk |
| Term Start1: | January 3, 1991 |
| Term End1: | January 3, 1995 |
| Predecessor1: | Michael F. Flaherty, Sr. |
| Successor1: | Stephen Lynch |
| Party: | Democratic |
| Occupation: | Attorney |
| Residence: | South Boston, Boston, Massachusetts |
Paul J. Gannon (born May 21, 1960) is a former member of the Massachusetts House of Representatives. He is a South Boston Democrat who represented the 4th Suffolk district from 1991 to 1995. He is an attorney who graduated from Providence College and The Catholic University of America's Columbus School of Law.