| NASC | Nashua Ambulatory Surgical Center 
| Others |
| NASC | National Alpine Ski Camp
| Others |
| NASC | National Animal Supplement Council
| Others |
| NASC | National Archaeology Students Conference
| Others |
| NASC | National Association of Sentencing Commissions
| Others |
| NASC | National Association of Soteric Counselors
| Others |
| NASC | National Association of Sports Commissions
| Others |
| NASC | National Association of Street Clubs
| Others |
| NASC | National Association of Student Councils
| Others |
| NASC | National Automobile Safety Council
| Others |
| NASC | National Automotive Service Company
| Others |
| NASC | Natural Areas of Social Cohesion
| Others |
| NASC | Navmar Applied Sciences Corporation
| Others |
| NASC | Nebraska Association of Student Councils
| Others |
| NASC | Needs Assessment and Service Coordination
| Others |
| NASC | Network Automotive Service Center
| Others |
| NASC | Nevada Association of Student Councils
| Others |
| NASC | Nissan Alliance Steering Committee
| Others |
| NASC | Norfolk Arsenal Supporters Club
| Others |
| NASC | North Alabama Shell Club
| Others |
| NASC | North American Sarracenia Conservancy
| Others |
| NASC | North American Shale Composite
| Others |
| NASC | North American Solar Challenge
| Others |
| NASC | North Atlantic Salmon Convention
| Others |
| NASC | North Augusta, South Carolina
| Others |
| NASC | Northeast Area School Consortium
| Others |
| NASC | Norwich Area Schools Consortium
| Others |
| NASC | Nottingham Arabidopsis Stock Centre
| Others |
| NASC | Novell Authorized Service Center
| Others |
| NASC | Numerical Analysis And Scientific Computing
| Others |
| NASC | Numismatic Association of Southern California
| Others |