| NAHS | National Aboriginal Health Strategy
| Others |
| NAHS | National Art Honor Society
| Others |
| NAHS | National Association for Healthcare Security
| Others |
| NAHS | Nazareth Academy High School
| Others |
| NAHS | Nazareth Area High School
| Others |
| NAHS | New Albany High School
| Others |
| NAHS | New American High Schools
| Others |
| NAHS | Nonlinear Analysis Hybrid Systems
| Others |
| NAHS | North Adams High School
| Others |
| NAHS | North American Herb Spice
| Others |
| NAHS | North Andover High School
| Others |
| NAHS | North Arlington High School
| Others |
| NAHS | North Atlanta High School
| Others |
| NAHS | North Attleborough High School
| Others |
| NAHS | North Augusta High School
| Others |
| NAHS | Northside Alternative High School
| Others |
| NAHS | Nurnberg American High School
| Others |