| Abbreviation | Definition |
|---|---|
| NCOS | Naval Control of Shipping |
| NCOS | Non-Commissioned Officers School |
| NCOW | Net- Centric Operations and Warfare |
| NCP | National Oil and Hazardous Substances Pollution Contingency Plan |
| NCP | Network Control Protocol |
| NCPS | Nuclear Contingency Planning System |
| NCR | National Capital Region |
| NCR | National Capital Region (US) |
| NCR | National Cryptologic Representative |
| NCR | National Security Agency/Central Security Service Representative |
| NCR | Naval Construction Regiment |
| NCR | Non Conformance Report |
| NCRCC | National Capital Region Coordination Center |
| NCRCG | National Cyber Response Coordination Group |
| NCRDEF | National Cryptologic Representative Defense |
| NCR-IADS | National Capital Region - Integrated Air Defense System |
| NCS | National Clandestine Service |
| NCS | Naval Control of Shipping |
| NCS | Net Control Station |
| NCS | Net Control System |