| Acronym | Definition |
|---|
| GSG➣Grenzschutzgruppe (German: Border Protection Unit; anti-terrorist group) |
| GSG➣German Sport Guns (Ense-Höingen, Germany) |
| GSG➣Geschwister-Scholl-Gymnasium (Germany) |
| GSG➣GetSomeGreek (St. Louis, MO) |
| GSG➣Grand Strategy Game |
| GSG➣Getting Started Guide (instructions) |
| GSG➣Global Software Group |
| GSG➣Global Scenario Group |
| GSG➣Goldman Sachs Group, Inc. |
| GSG➣Grant Street Group (Pittsburgh, PA) |
| GSG➣Ground-Signal-Ground |
| GSG➣Gunslinger Girl (anime) |
| GSG➣Global Strategies Group |
| GSG➣Geographic, Statistical and Government Information Centre (University of Ottawa; Canada) |
| GSG➣Gujarat State Government (India) |
| GSG➣Grampian Speleological Group (founded in 1961 in Scotland) |
| GSG➣Great Science for Girls (initiative) |
| GSG➣General Support Group |
| GSG➣Geological Society of Glasgow (Scotland, UK) |
| GSG➣Global Safety Group BV |
| GSG➣Gross System Group |
| GSG➣General Squadron Group |
| GSG➣Grant Segment |
| GSG➣Good Surgeon Guide (website) |