| NARA | Nathaniel Allen Recreation Area 
| Others |
| NARA | National Aircraft Resale Association
| Others |
| NARA | National Alien Registration Authority
| Others |
| NARA | National Aliens Registration Authority
| Others |
| NARA | National Aquatic Resources Agency
| Others |
| NARA | National Archive and Records Administration
| Others |
| NARA | National Archives and Record Administration
| Others |
| NARA | National Archives and Records Administration
| Others |
| NARA | National Archives Records Administration
| Others |
| NARA | National Association for Regulatory Administration
| Others |
| NARA | Non-Administrative Receivers Association
| Others |
| NARA | Nordic Arthroplasty Register Association
| Others |
| NARA | North Alabama Repeater Association
| Others |
| NARA | North American Racing Academy
| Others |
| NARA | North American Rail Alliance
| Others |
| NARA | North American Regional Association
| Others |
| NARA | North American Ring Association
| Others |
| NARA | North American Ringsport Association
| Others |
| NARA | Northwest Advanced Renewables Alliance
| Others |