sort by Rank | Alpha
| Possible Meanings | Rank |
|---|
| North American Alpaca Show | **** |
| National Asian American Survey | *** |
| National Aeronautics And Space | *** |
| NASCAR All American Series | *** |
| North American Aircraft Services | *** |
| Needs Assessment and Analysis Services | *** |
| National Agriculture Advisory Services | *** |
| Nordic Association of African Studies | *** |
| National Academy of Agricultural Sciences | *** |
| Nordic Association for American Studies | *** |
| Nederlandse Artsen Acupunctuur Stichting | *** |
| Nurses' AIDS Attitude Scale | ** |
| National Academy on an Aging Society | ** |
| Northwest Association Accredited Schools | ** |
| Nurses' Attitudes About AIDS Scale | ** |
| National Association of Academies of Science | ** |
| National Association of the Academies of Science | ** |
| Northwest Association of Schools | ** |
| Nepal AOTS Alumni Society | ** |
| National Agriculture Advisory Service | ** |
| National Association of Academies of Sciences | ** |
| National Anorexic Aid Society | ** |
| Network Authentication and Authorization Service | ** |
| NASA Automated Awards System | ** |
| North America Aviation Services | ** |
| North Atlanta Action Shooters | ** |
| Networking and Automation Services | ** |
| National Association of Audubon Societies | ** |
| National Agricultural Advisory System | ** |
| NW Association of Accredited Schools | ** |
| Naval Auxilary Air Station | ** |
| Naval Auxiliary Air Stations | ** |
| Northwestern Association of Accredited Schools | ** |
| Netherlands Alumni Association of Singapore | * |
| Nigerian Association of Agricultural Students | * |
| North American Accounting Society | * |
| New Academic Appointments Scheme | * |
| North American Auto Show | * |
| Nurses Aids Attitude Scale | * |
| National Association of Accredited Schools | * |