| Acronym | Definition |
|---|
| NICS | National Instant Criminal Background Check System |
| NICS | Nissan Induction Control System |
| NICS | Newly Industrialized Countries |
| NICS | Northern Ireland Civil Service |
| NICS | Next-Generation Incident Command System (emergency response) |
| NICS | Network of International Christian Schools |
| NICS | National Identity Cards Scheme (UK) |
| NICS | National Institute for Chemical Studies |
| NICS | NATO Integrated Communications System |
| NICS | Near Infrared Camera Spectrometer |
| NICS | Novell Internet Caching System |
| NICS | National Islamic Committee on Scouting |
| NICS | National Inventory Control System |
| NICS | Nomenclature Identification and Configuration System |
| NICS | National Intelligence Computer System |