| Abbreviation | Definition |
|---|---|
| NGS | New German Spelling |
| NH | New Horizon |
| NHAB | New Hampshire Association of Broadcasters |
| NHD | Newbury House Dictionary |
| NHM | Networks and Heterogeneous Media |
| NHM | New Horizon Media |
| NHR | The New Humanities Reader |
| NIB | News In Brief |
| NICAM | Near Instantaneously Companded Audio Multiplex |
| NICC | Newspaper Industry Communications Center |
| NICK | Nickelodeon |
| NID | New India Digest |
| NIE | Newspapers In Education |
| NIM | Nokia Interleaved Multimedia |
| NIMBY | Northern Illinois Manufacturing Business Yearly |
| NIMF | National Institute on Media and the Family |
| NIMS | Newsprint Inventory Management System |
| NIPR | Northeast Indiana Public Radio |
| NIVC | National Interactive Video Centre |
| NJA | National Jazz Awards |