| Abbreviation | Definition |
|---|---|
| NGFS | National Grigsby Family Society |
| NGGS | National Gerontological and Geriatric Societies |
| NGH | Natural History Society of Hannover |
| NGH | Naturhistorische Gesellschaft Hannover |
| NGI | Dutch Computer Society |
| NGI | Nederlands Genootschap voor Informatica |
| NGiB | Naturforschende Gesellschaft in Basel |
| NGiB | Scientific Society in Basel |
| NGIS | Nevada Geographic Information Society |
| NGL | Naturforschende Gesellschaft Luzern |
| NGL | Scientific Society in Lucerne |
| NGOS | North Gulf Oceanic Society |
| NGPS | Northern Goldfish and Pondkeepers Society |
| NGRS | Narrow Gauge Railway Society |
| NGS | (G*>2 -L0M-? 8.> |
| NGS | ????? ???????? ???? |
| NGS | National Genealogical Society |
| NGS | Nepal Geological Society |
| NGU | Natuurkundig Gezelschap te Utrecht |
| NGU | Natuurkundig Gezelschap Utrecht |