| Abbreviation | Definition |
|---|---|
| NLSS | National Language Sort Sequence |
| NLTK | Natural Language Tooling Kit |
| NLU | Natural Language Understanding |
| NLUI | Natural-Language User Interface |
| NLV | National Language Version |
| NML | Netomatic Markup Language |
| NML | NewGRF Meta Language |
| NMTL | National Museum of Taiwan Literature |
| NNSE | Non-Native Speaker of English |
| NNSE | Non-native Speakers of English |
| NODL | National Organization for Decent Literature |
| NOOL | New Object Oriented Languages |
| NOTICEE | Addressee of a notice |
| NPDL | Navigation Plan Definition Language |
| NPL | Nancys Postfix Language |
| NPL | Normative Programming Language |
| NPPL | Network Picture Processing Language |
| NQL | New Quadruple Language |
| NQL | NXT Query Language |
| NRL | Natural Rule Language |