| 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) |