| NAICS | Naicsnorth American Industry Classification System 
| Others |
| NAICS | National American Industry Classification System
| Others |
| NAICS | New Auto Industry Classification Survey
| Others |
| NAICS | North American Industry And Classification System
| Others |
| NAICS | North American Industry Classification System
| Others |
| NAICS | North American Industry Classification System Codes
| Others |
| NAICS | Northern Alliance Of Information Compiled Sources
| Others |