| Acronym | Definition |
|---|
| NIEC➣Nihon Inter Electronics Corporation (Japan) |
| NIEC➣Northern Ireland Economic Council (now Economic Research Institute of Northern Ireland; est. 1977; Belfast, Northern Ireland, UK) |
| NIEC➣National Institute of Economics (Moscow, Russia) |
| NIEC➣Northern Ireland Events Company (UK) |
| NIEC➣Northern India Engineering College (Lucknow, India) |
| NIEC➣Nextgen Integration and Evaluation Capability (US FAA) |
| NIEC➣Nebraska Iowa Electrical Council |
| NIEC➣NAVFAC Industrial Engineering Center |