| 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) |