| Abbreviation | Definition |
|---|---|
| NICRSP | International Workshop on Neural Networks for Identification, Control, Robotics, and Signal/Image Processing |
| NIFC | Northern Illinois Football Conference |
| NIGC | National and International Graduate Conference |
| NIPS | IEEE Conference on Neural Information Processing Systems - Natural and Synthetic |
| NIQC | Northern Illinois Quality Conference |
| NIRC | National Integrative Research Conference |
| NISC | National Information Security Conference |
| NISS | North India Solar Summit |
| NITEC | NATO Individual Training and Education Conference |
| NJAC | Northwest Jersey Athletic Conference |
| NJHC | National Junior High Conference |
| NJRSF | North Jersey Regional Science Fair |
| NKAC | Northern Kentucky Athletic Conference |
| NLC | National Leadership Conference |
| NLCS | National League Conference Series |
| NLDC | National Leadership Development Conference |
| NLLC | NATO Lessons Learned Conference |
| NLO | Non-Linear Optics: Materials, Phenomena, and Devices |
| NLSC | National Leadership and Skills Conference |
| NLTC | NAD Leadership Training Conference |