| Abbreviation | Definition |
|---|---|
| NIT | Nagarjuna Institute of Technology |
| NIT | National Institute of Technology |
| NITEC | National Institute of Technical Education Certificate |
| NITEC | Northern Illinois Technology Enterprise Center (NIU) |
| NIU | National Intelligence University |
| NIU | Northern Illinois University |
| NJC | Not Just Cows |
| NJCU | New Jersey City University |
| NJIT | New Jersey Institute of Technology |
| NJMS | New Jersey Medical School |
| NJU | Nanjing University |
| NK | New Kensington, Pennsylvania, campus of Pennsylvania State University |
| NKC | NieuwKoop Center |
| NKI | Nathan S. Kline Institute for Psychiatric Research |
| NKMU | National Kaohsiung Marine University |
| NKNU | National Kaohsiung Normal University |
| NKU | Northern Kentucky University |
| NKU | Northern Kentucky University's |
| NKUA | National and Kapodistrian University of Athens |
| NKUT | Nan Kai University of Technology |