| Abbreviation | Definition |
|---|---|
| NJV | Not Just Videos |
| NJVC | Native Joint Venture Corporation |
| NJY | Not Just Yarn |
| NK | Nielsen Kellerman |
| NK | Nordiska Kompaniet |
| NKA | Network Knowledge Architects |
| NKA | Nichols, Kaster, Anderson, PLLP - Attorneys At Law |
| NKC | Nakamura Kagakukogyo Company, Ltd. |
| NKCA | Northern Kentucky Counseling Association |
| NKCE | North Kansas City Electric |
| NKI | Network Konnection, Inc. |
| NKJ | Nithyakalyani Jewellers |
| NKL | Nordwestdeutsche Klassenlotterie |
| NKR | Newton, Kastner, Remmel - Attorneys at Law |
| NKS | National Knife Supply |
| NKS | Networked Knowledge Systems, Inc. |
| NKT | Nordic Cable and Tread |
| NKV | Niederbergischer Katzenverein, e. V. |
| NKW | Nadorp Kemp Weatherall |
| NLA | Ned Lyle Associates |