| NISC | National Information Security Conference 
| Others |
| NISC | National Information Services Corporation
| Others |
| NISC | National Information Solutions Cooperative
| Others |
| NISC | National Inquiry Services Centre
| Others |
| NISC | National Institute Of Senior Centers
| Others |
| NISC | National Intelligence Simulation Center
| Others |
| NISC | Naval Information Service Center
| Others |
| NISC | Network Information and Support Center
| Others |
| NISC | Nigeria Information Service Centre
| Others |
| NISC | Nih Intramural Sequencing Center
| Others |
| NISC | No Instruction Set Computer
| Others |
| NISC | No Instruction Set Computing
| Others |
| NISC | Nonproliferation And International Security Center
| Others |
| NISC | Northbridge International School Cambodia
| Others |