| NABC | National Advanced Biofuels Consortium 
| Others |
| NABC | National Agricultural Biosecurity Center
| Others |
| NABC | National Agricultural Biotechnology Council
| Others |
| NABC | National Association of Basketball Coaches
| Others |
| NABC | National Auto Body Council
| Others |
| NABC | Native American Bible College
| Others |
| NABC | Need Approach Benefit and Competition
| Others |
| NABC | Needs Approach Benefits and Competition
| Others |
| NABC | Needs Approaches Benefits Competition
| Others |
| NABC | Netherlands African Business Council
| Others |
| NABC | New Albanian Brewing Company
| Others |
| NABC | New Albany Ballet Company
| Others |
| NABC | Non Acid Bathroom Cleaner
| Others |
| NABC | Non Availability of Birth Certificate
| Others |
| NABC | North American Banding Council
| Others |
| NABC | North American Baptist Conference
| Others |
| NABC | North American Bass Circuit
| Others |
| NABC | North American Bear Center
| Others |
| NABC | North American Bengali Conference
| Others |
| NABC | North American Blueberry Council
| Others |
| NABC | North American Boxing Council
| Others |
| NABC | North American Bridge Championships
| Others |
| NABC | North Andover Booster Club
| Others |
| NABC | Northwest Agriculture Business Center
| Others |