| Rank | Abbreviation | Meaning |
|---|
| ***** | NNEC | NIGERIAN NAVY ENGINEERING COLLEGE
| |
| ***** | NNEC | Now, Now Every Children
| |
| **** | NNEC | Northwest Nations Education Council
| |
| ** | NNEC | NATO Network Enabled Capabilities
| |
| ** | NNEC | Network for New Energy Choices
| |
| ** | NNEC | Northern New England Conference of Seventh-Day Adventists
| |
| ** | NNEC | National Nuclear Energy Commission
| |
| ** | NNEC | Nortel Networks Enterprise Configurator
| |
| ** | NNEC | Northern Nishnawbe Education Council
| |
| * | NNEC | Northern Neck Electric Cooperative
| |
| * | NNEC | NATO Network Enabled Capability
| |
| * | NNEC | neonatal necrotizing enterocolitis
| |
| * | NNEC | necrotizing enterocolitis
| |
| * | NNEC | North Nova Education Center
| |
| * | NNEC | Northeast Nuclear Energy Company
| |
| * | NNEC | National Nano Engineering Conference
| |
| * | NNEC | Northwoods NiiJii Enterprise Community
| |
| * | NNEC | Net NEW ENGLAND CHAPTER
| |
| * | NNEC | Nordic Network of Exellence in Construction
| |
| * | NNEC | National Nurse Executive Council
| |
| * | NNEC | North Nova Education Centre
| |
| * | NNEC | Northern New England Chapter
| |