| Abbreviation | Definition |
|---|---|
| NSC | National Socialist Club |
| NSDAP | National Socialist German Workers' Party |
| NSDF | National Salvation Democratic Front |
| NSDP | National Solidarity Democratic Party |
| NSDP | Nevada State Democratic Party |
| NSDP | New Social Democratic Party |
| NSDWP | National Socialist Democratic Workers Party |
| NSDWP | Nationalist Socialist Democratic Workers Party |
| NSF | National Secessionist Forum |
| NSFM | National Socialist Freedom Movement |
| NSKK | National Socialist Motor Corps |
| NSM | National Socialist Movement |
| NSN | National Significant Number |
| NSNS | National Socialist News Service |
| NSPT | National Socialist Party Of Tripura |
| NSPT | Nationalist Socialist Party Of Tripura |
| NSRP | National States Rights Party |
| NSSO | National Sample Survey Organization |
| NSSR | Nomad Soviet Socialist Republic |
| NSU | National Socialist Underground |