| Abbreviation | Definition |
|---|---|
| NN | Nearest Neighbor |
| NN | Neural Network |
| NNA | Named Network Algorithm |
| NNA | Node Numbering Agent |
| NNAG | NCAR Network Advisory Group |
| NND | No New Design |
| NNE | Networking Nuclear Education |
| NNF | New National Framework |
| NNG | Nordic Networking Group |
| NNI | Network To Network Interface |
| NNM | Network Node Manager |
| NNO | National Network Office |
| NNSL | Neural Network Simulation Language |
| NNT | Nap Network Transport |
| NNTP | Network News Transfer Protocol |
| NNTP | Normal Network Test Packet |
| NNW | Neighborhood Network |
| NOD | NETS/OSG/DSG |
| NOE | Nintendo Of Europe |
| NOF | Never Opened the Folders |