| national commercial banks | national security | nature center |
| navigation equipment | neckwear-manufacturers supplies | neckwear-manufacturers supplies manufacturers |
| neckwear manufacturers | neckwear mens | neckwear mens manufacturers |
| needles | new car dealers | new dealers |
| newspaper | newspaper distributors | newspaper publishers |
| news service | newsstand | news syndicates |
| no drivers | non | nonclassified establishments |
| noncommercial research organizations | nonferrous drawing | non ferrous foundry |
| nonferrous insulating | nonferrous rolling | nonferrous wiredrawing |
| nonmetallic mineral products | non profit organizations | nonresidential building operators |
| nonresidential construction | nonscheduled | nonwoven fabrics |
| nonwoven fabrics manufacturers | noodle | noodles manufacturers |
| novelties-ex prcs manufacturers | novelties ex prcs | novelty shops |
| nursery schools | nursing care | nursing convalescent homes |
| nursing home |
