| Abbreviation | Definition |
|---|---|
| NA | Necessary Action |
| NA | Non-Availability |
| NA | Not Advertised |
| NA | Not Applicable |
| NABIT | Nuts and Bolts Integration Team |
| NABS | National Advertising Benevolent Society |
| NAC | Notice Act And Communicate |
| NAD | National Advertising Division |
| NADL | Native American Direct Loan |
| NADs | National Application Documents |
| NAE | Not An Emergency |
| NAERM | Negley Award of Excellence in Risk Management |
| NAF | Negation As Failure |
| NAFA | Net Acquisition Of Financial Assets |
| NAFINSA | Nacional Financiera |
| NAFSA | Native American Financial Services Association |
| NAIAS | North American International Auto Show |
| NAICS | North American Industry Classification |
| NALCO | National Aluminium Copmpany |
| NAMM | Not Available Maybe March |