| NNC | IEEE Neural Networks Council 
| Others |
| NNC | N nitroso compounds
| Others |
| NNC | Naga National Council
| Others |
| NNC | Nascar Nextel Cup
| Others |
| NNC | National Navigation Company
| Others |
| NNC | National Negotiation Council
| Others |
| NNC | National Neighborhood Coalition
| Others |
| NNC | National Network Communications
| Others |
| NNC | National Network Congestion
| Others |
| NNC | National Newsmedia Council
| Others |
| NNC | National Nonstructural Committee
| Others |
| NNC | National Notification Center
| Others |
| NNC | National Nuclear Center
| Others |
| NNC | National Numismatic Certification
| Others |
| NNC | National Numismatic Collection
| Others |
| NNC | National Nutrition Council
| Others |
| NNC | Natural Nail Care
| Others |
| NNC | NCEA NSBECS Council
| Others |
| NNC | Near Neighbour Countries
| Others |
| NNC | Near Neutral Calibration
| Others |
| NNC | Nearest Neighbor Classification
| Others |
| NNC | Nearly New Car
| Others |
| NNC | Nellie N Coffman
| Others |
| NNC | Neonatal Nurse Clinicians
| Others |
| NNC | Nepal Nursing Council
| Others |
| NNC | Network to Network Communication
| Others |
| NNC | Neural Network Controller
| Others |
| NNC | New National Car
| Others |
| NNC | Newman Nutrition Center
| Others |
| NNC | No Name Clan
| Others |
| NNC | No Name Computers
| Others |
| NNC | No Nut Crush
| Others |
| NNC | Non Negativity Constraint
| Others |
| NNC | Non-Normal Checklist
| Others |
| NNC | Nordic NIAS Council
| Others |
| NNC | Norgaard Neale Camden, LTD., Chartered Accountants
| Others |
| NNC | Normand Nadeau Communications
| Others |
| NNC | North Nottinghamshire College
| Others |
| NNC | North Notts College
| Others |
| NNC | Northwest Nazarene College
| Others |
| NNC | Northwest Neighbors Connecting
| Others |
| NNC | Not Nano Coated
| Others |
| NNC | Numeric Nutrient Criteria
| Others |
| NNC | Nurture Nature Center
| Others |
| NNC | Nutrition North Canada
| Others |
| NNC | Nuveen North Carol
| Others |