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