| Abbreviation | Definition |
|---|---|
| NSN | NorthStarNet |
| NSOE | Non-State Own Enrterprise |
| NSOL | Nuclear Solutions, Inc. |
| NSP | Natures Sunshine Products |
| NSPI | Nova Scotia Power Inc |
| NSPL | Nest Software Private, Limited |
| NSPMC | Nigeria Security Printing and Minting Company |
| NSPMC | Nigeria Security Printing and Minting Corporation |
| NSPMC | Nigerian Security Printing and Minting Company |
| NSR | National Systems Research Company |
| NSRA | National Shoe Retailers Association |
| NSS | New Skies Satellites |
| NSS | Nintendo Sega Sony |
| NSS | Nuclear Safety Solutions, Limited |
| NSSC | Nuclear Security Services Company |
| NSSC | Nul System Services Corporation |
| NSSI | National Student Services INC |
| NSSI | North Slope Salvage Incorporated |
| NST | National Safety Technologies |
| NST | National Sales Training |