sort by Rank | Alpha
| Possible Meanings | Rank |
| National Ag Statistics Service | **** |
| National Academy of Sciences | **** |
| National Adventure Sports Show | **** |
| National Aeronautics and Space | *** |
| National Agricultural Statistic Service | *** |
| National Agriculture Statistics Service | *** |
| North American Spitfire Squadron | *** |
| National Association of Secretaries of States | *** |
| National Agricultural Statistical Service | *** |
| National Agricultural Statistics Survey | *** |
| National Association of Secondary Schools | *** |
| National Association of Steel Stockholders | *** |
| National Agricultural Statistics Services | *** |
| National Agriculture Statistic Service | *** |
| National Asylum Seekers Service | *** |
| north america spine society | *** |
| National Asylum Seekers Support | *** |
| Native American Student Services | *** |
| North American Sieger Show | *** |
| National Asylum Support Services | *** |
| National Active Student Survey | *** |
| Network of Academia in Social Sciences | *** |
| National Agricultural Statistical Survey | *** |
| National Academy of Screen and Sound | *** |
| Native American Student Scholarships | *** |
| National Association of Stable Staff | *** |
| National Agriculture Statistics Survey | ** |
| North American Security Services | ** |
| National Accident Severity Study | ** |
| National Agriculture Statistical Service | ** |
| Neonatal Abstinence Scoring System | ** |
| New Apprenticeships Support Services | ** |
| National Association of Secondary School | ** |
| National Accident Sampling System database | ** |
| National Agricultural Statistics Service, 1996 | ** |
| non-arachidonic acid stimulated system | ** |
| North American shagya society | ** |
| Nordic Association for Semiotic Studies | ** |
| National Asylum Seeker Service | ** |
| Nichols Advantage Specialty System | ** |
| North American Strawberry Symposium | ** |
| North Atlantic Sightings Surveys | ** |
| Navigating the American School System | ** |
| North American Sartre Society | ** |
| National Association of Street Schools | ** |
| New Apprenticeship Support Services | ** |
| Nevada Association of School Superintendents | ** |
| National Agricultural Sample Survey | ** |
| National Association for Small Schools | ** |
| North American Simulation Series | ** |
| Network Access Sub System | ** |
| north american spinoza society | ** |
| National Association of Suggestion Systems | ** |
| National Agicultural Statistics Service | ** |
| nkroful agricultural secondary school | ** |
| National Association of Secretary of State | ** |
| North American Safety Systems | ** |
| National Activity Student Survey | ** |
| North American Security Symposium | ** |
| National Aquatic Safety School | ** |
| National Air and Surface System | * |
| Nationwide Asbestos Survey Service | * |
| National Agriculture Statistical Survey | * |
| Network Architecture Simulation System | * |
| New Accounts Sales and Service | * |
| North American Spinal Society | * |
| NASA AMOS Spectral Study | * |
| Northern America Spine Society | * |
| North American for Sociology of Sport | * |
| North American Shooting Sports | * |
| National Analysis Sampling System | * |
| Name Address Social Security | * |
| National Assn of Secretaries of State | * |
| National Association of Secretarial Services | * |
| Network Administrator Support Services | * |
| NETWORK ARCHITECTURE SPEECH SYSTEM | * |
| Noranna All Saints Site | * |
| Norannas All Saints Site | * |
| North American Stone Skipping | * |
| Strengthening key qualifications through qualification Need Analysis to assist SMEs and their Staff | * |