| Naval Air Development Center | Academic & Science |
| Nashville Auto-Diesel College | Academic & Science |
| National Association Demolition Contractors | Business |
| National Association of Dredging Contractors | Business |
| Native American Development Corporation | Business |
| North American Dismantling Corp | Business |
| New Amsterdam Development Consultants | Community |
| Newport Associates Development Company | Community |
| National Asian Deaf Congress | Community |
| National Association of Dealer Counsel | Community |
| National Athletic Development Council | Community |
| National Association of Distinguished Counsel | Community |
| Nepean Arts Design Centre | Community |
| Northcentral Arkansas Development Council | Community |
| National Air Defence Corps | General |
| Not Advanced Degree Candidate | General |
| National ANPR Data Centre | General |
| National Air Duct Cleaners | General |
| North Alabama Dance Center | General |
| Nebraska Accountability and Disclosure Commission | General |
| Nearly All Discrete Component | General |
| North Atlantic Defense Coalition | General |
| North American Digital Communications | General |
| Northern Area District Council | Governmental |
| Naval Air Development Center, Warminster, PA | Governmental |
| National Animal Disease Center (US Department of Agriculture) | Medical |
| National Arts and Disability Center | Medical |
| National Animal Disease Center | Medical |
| National Australia Day Council | Regional |
| National Athletic Directors Conference | Sports |
