NNCS
| Acronym | Definition |
|---|---|
| NNCS | NASCAR Nextel Cup Series (auto racing) |
| NNCS | Norwood-Norfolk Central School (New York) |
| NNCS | New Neighbors Contact Service (Macungie, PA) |
| NNCS | NSF-Navy Civilian Service (US NSF) |
| NNCS | Newport News Composite Squadron (US Civil Air Patrol) |
| NNCS | Non-Nicotinized Cigarette Smoking (tobacco use) |