| Acronym | Definition |
|---|
| GCSS➣GEWEX Cloud System Study |
| GCSS➣Global Combat Support System |
| GCSS➣Georgia Council for the Social Studies (est. 1963) |
| GCSS➣Global Congress of Spiritual Scientists |
| GCSS➣Glasgow Community Safety Services (UK) |
| GCSS➣Global Command Support System |
| GCSS➣Ground Combat Support Systems |
| GCSS➣Graphite Core Support Structure |
| GCSS➣Georgia Community Support and Solutions, Inc (Atlanta, GA) |