| NEC | National Economic Commission 
| Others |
| NEC | National Economic Council
| Others |
| NEC | National Educational Commission
| Others |
| NEC | National Election Cheater
| Others |
| NEC | National Electric Code
| Others |
| NEC | National Electrical Code
| Others |
| NEC | National Electrostatics Corp
| Others |
| NEC | National Electrostatics Corporation
| Others |
| NEC | National Emission Ceilings
| Others |
| NEC | National Emissions Ceilings
| Others |
| NEC | National Entnazification Camp
| Others |
| NEC | National Entrepuerneur Convention
| Others |
| NEC | National Ethics Committee
| Others |
| NEC | National Event Consortium
| Others |
| NEC | National Executive Committee
| Others |
| NEC | National Executive Council
| Others |
| NEC | National Exhibition Centre
| Others |
| NEC | National Extension College
| Others |
| NEC | Native English Corpus
| Others |
| NEC | Natural Extension Concept
| Others |
| NEC | Naval Enlisted Classification
| Others |
| NEC | Navy Enlisted Classification
| Others |
| NEC | Navy Enlisted Classifications
| Others |
| NEC | NECrosis
| Others |
| NEC | Necrotizing EnteroColitis
| Others |
| NEC | Neighborhood Electric Cars
| Others |
| NEC | Net Explosive Content
| Others |
| NEC | Network Enterprise Center
| Others |
| NEC | Neuro Emotional Complex
| Others |
| NEC | neuroendocrine carcinoma
| Others |
| NEC | neuroendocrine cell
| Others |
| NEC | Neutral Earth Compensator
| Others |
| NEC | Neutral Electromagnetic Coupler
| Others |
| NEC | Never Ending Changes
| Others |
| NEC | Never Ending Circle
| Others |
| NEC | New Engineering Contract
| Others |
| NEC | New England College
| Others |
| NEC | New England College's
| Others |
| NEC | New England Comics
| Others |
| NEC | New England Conservatory
| Others |
| NEC | Nijmegen Eendracht Combinatie
| Others |
| NEC | Nijmegen Eendracht Combination
| Others |
| NEC | Nippon Electric Co
| Others |
| NEC | Nippon Electric Company
| Others |
| NEC | Nippon Electronics Company
| Others |
| NEC | Nissan Eastern Cape
| Others |
| NEC | Nissan Electric Club
| Others |
| NEC | Nissan Evalia Community
| Others |
| NEC | Nitrate Elimination Company
| Others |
| NEC | No Evidence of Cancer
| Others |
| NEC | No Existing Category
| Others |
| NEC | Nobody's Even Close
| Others |
| NEC | Non-Esterified Cholesterol
| Others |
| NEC | North East Canada
| Others |
| NEC | North East Crew
| Others |
| NEC | North Equatorial Current
| Others |
| NEC | Northcoast Environmental Center
| Others |
| NEC | Northeast Corridor
| Others |
| NEC | Northeast Exotic Cars
| Others |
| NEC | Northern European Cup
| Others |
| NEC | Norton Essential Concepts
| Others |
| NEC | Not Elsewhere Classifiable
| Others |
| NEC | Not Elsewhere Classified
| Others |
| NEC | Not Enough Cash
| Others |
| NEC | Not Enough Confusion
| Others |
| NEC | Not Even Close
| Others |
| NEC | Not Even Compatible
| Others |
| NEC | Not Even Crap
| Others |
| NEC | Nuclear Energy Commission
| Others |
| NEC | Nukem Enterprises Calculator
| Others |
| NEC | Numerical Electromagnetics Code
| Others |
| NEC | Numerical Electromagnics Code
| Others |
| NEC | Nursing Ethics Committee
| Others |
| NEC | The No Effect Concentration
| Others |
| NEC | The North Easten Council
| Others |