| Abbreviation | Definition |
|---|---|
| NSCCL | National Securities Clearing Corporation Ltd |
| NSCCY | North Semairi Commercial Center,Yanbu |
| NSCI | New Sky Communications Inc |
| NSCI | Nutritional Supplements Corporation, Incorporated |
| NSD | Nik Soft Designs |
| NSDC | National Skill Development Corporation |
| NSDL | National Securities Depository Ltd |
| NSDL | National Securities Depository, LTD. |
| NSDPSM | Never-Split -the Differnce Price- Setting Mechanism |
| NSEIL | National Stock Exchange of India Ltd |
| NSEL | National Spot Exchange Ltd |
| NSG | National Service Group, Inc. |
| NSG | Network Systems Group |
| NSGI | Network Security Group Inc |
| NSGI | Network Specialty Group, Inc. |
| NSI | Nail Systems International |
| NSI | National Sportswear, Inc. |
| NSI | Naval Systems Inc |
| NSI | Nearfield Systems Inc |
| NSI | Network Solutions Inc |