| Acronym | Definition |
|---|
| NIG➣Naval Inspector General (US Navy) |
| NIG➣National Industries Group (Kuwait) |
| NIG➣National Institute of Genetics |
| NIG➣Nigeria Internet Group (Lagos, Nigeria) |
| NIG➣Non-Investment Grade (bonds) |
| NIG➣Navy Inspector General |
| NIG➣National Insurance Guarantee Corporation Ltd. (UK insurance company) |
| NIG➣New in Germany |
| NIG➣Norddeutsche Jugend Im Internationalen Gemeinschaftsdienst eV |
| NIG➣not in goal (soccer) |