| Abbreviation | Definition |
|---|---|
| NAFA | National Air Filtration Association |
| NAFA | National Alfalfa and Forage Alliance |
| NAFA | National Association of Fleet Administrators, Inc. |
| NAFA | National Association of Forensic Accountants |
| NAFED | National Association of Fire Equipment Distributors |
| NAFEO | The National Association For Equal Opportunity |
| NAFI | National Association of Flight Instructors |
| NAFI | National Association of Fugitive Investigators |
| NAFTA | North African Federated Trade Association |
| NAFTA | North Atlantic Free Trade Association |
| NAG | National Association Of Goldsmiths |
| NAG | Numerical Algorithms Group |
| NAGC | National Association of Government Communicators |
| NAGI | National Association of Geographers, India |
| NAGS | National Association Of Grooms And Students |
| NAHB | National Association of Home Builders |
| NAHBUS | National Association of Home Builders of the United States |
| NAHJ | National Association of Hispanic Journalists |
| NAHQ | National Association for Healthcare Quality |
| NAHRS | Nursing and Allied Resources Section [of the MLA] |