| national commercial banks | national security | needles |
| new car dealers | new dealers | newspaper |
| newspaper distributors | newspaper publishers | news service |
| newsstand | news syndicates | no drivers |
| non | nonclassified establishments | non ferrous foundry |
| non profit organizations | nonresidential building operators | nonscheduled |
| novelties-ex prcs manufacturers | novelties ex prcs | novelty shops |
| nursery schools | nursing care | nursing convalescent homes |
| nursing home | nuts manufacturers |
