| Abbreviation | Definition |
|---|---|
| NAR | National Assembly of Regents |
| NARI | Norwegian Agricultural Research International |
| NAS | Native American Studies |
| NAS | Not Another School |
| NASB | Native American Student Body |
| NASB | North American Student Board |
| NASM | National Academy of Sports Medicine |
| NASS | Native American Student Services |
| NASSA | National Aboriginal Student Services Association |
| NATA | National Association of Testing Authorities |
| NAU | National American University |
| NAU | North American University |
| NAU | Northern Arizona University |
| NAU | Northern Arizona University's |
| NAUL | Netherlands America University League |
| NAULC | Netherlands America University League of California |
| NAUN | North Atlantic University Union |
| NAUS | Neuroscience Association for Undergraduate Students |
| NAUU | National Agricultural University of Ukraine |
| NAUW | National Association of University Women |