GSSG
| Acronym | Definition |
|---|---|
| GSSG | Geoscience Standing Scientific Group |
| GSSG | General Sure Start Grant (UK) |
| GSSG | General Schedule Supervisory Guide |
| GSSG | Granite State Senior Games (est. 1988; Manchester, NH) |
| GSSG | Guatemalan Student Support Group (Chapel Hill, NC) |
| GSSG | Ground Signal Signal Ground (method of routing high speed differential signals on a PCB) |