| Abbreviation | Definition |
|---|---|
| NAAC | National Associations Advisory Committee |
| NAAC | North American Association for the Catechumenate |
| NAAC | North American Association of the Catechumenate |
| NAAG | National Aquaculture Association of Guyana |
| NAAG | National Association of Attorneys General |
| NAAI | National Association of Agriculture Insurers |
| NAAM | Netherlands American Association of Minnesota |
| NAAMSA | National Association of Automobile Manufacturers of South Africa |
| NAANY | Naval Academy Association of New York |
| NAAO | National Association of Amateur Oarsmen |
| NAAP | National Association for the Advancement of Psychoanalysis |
| NAAP | National Association of Activity Professionals |
| NAAR | National Association of Advertising Representatives |
| NAAR | Northern Arizona Association of REALTORS |
| NAAS | National Association of Academies of Science |
| NAAS | Nordic Association for American Studies |
| NAAS | Northwest Association of Accredited Schools |
| NAASRA | National Association of Australian State Road Authorities |
| NAASRA | National Association of Australian State Roading Authorities |
| NAASRA | National Association of Australian State Roading Authority |