| Abbreviation | Definition |
|---|---|
| NDNA | North Dakota Nurses Association |
| NDNPA | North Dakota Nurse Practitioner's Association |
| NDPA | National Decorating Products Association |
| NDSA | Nottinghamshire and Derbyshire Society of Architects |
| NEA | National Erectors Association |
| NEA | National Esthetic Association |
| NEA | The National Extortion Association |
| NEAAA | Northeast Arkansas Angus Association |
| NEASA | National Employees Association Of South Africa |
| NEASA | National Employers Association Of South Africa |
| NEASA | New England American Studies Association |
| NEBF | National Electrical Benefit Fund |
| NEBOSH | National Examination Board for Occupational Safety and Health |
| NEBOSH | National Examination Board Of Safety & Health |
| NEBS | National Examining Board for Supervision and Management |
| NECA | National Electrical Contractors Association |
| NECA | National Exchange Carrier Association |
| NECA | NorthEast Chemical Association |
| NECA | Northeast Energy and Commerce Association |
| NEDA | National Electronic Distributors Association |