| John J. Gallagher | |
| Office: | Member of the New Jersey General Assembly from the 6th Legislative District |
| Term Start: | January 8, 1974 |
| Term End: | January 10, 1978 |
| Alongside: | Mary Keating Croce |
| Predecessor: | District created |
| Successor: | Barbara Berman |
| Birth Date: | 13 May 1944 |
| Party: | Democratic |
John J. Gallagher (born May 13, 1944) is an American politician who served in the New Jersey General Assembly from 1974 to 1978.[1] [2]