| Carrier Code | Carrier Name |
| NLSS | NORTON LILLY INTERNATIONAL INC |
| NLXU | NORTON LINE INC, THE |
| NMAG | NORKO MARINE AGENCY INC |
| NMCU | N A MA CO SRL |
| NMEA | NEMEA E N E |
| NMSE | NORTHERN MARINE SERVICES INC |
| NNCM | NIREUS NAVIGATION COMPANY LIMITED |
| NNDU | NAVIERA NEPTUNO DEL PERU S A |
| NNIU | NAUTICA LINE |
| NNVC | NATIONAL NAVIGATION COMPANY |
| NOBU | NORDIC BULKERS |
| NOCU | NORTHERN CONTAINER AS |
| NODA | NORDANA LINE AS |
| NODU | NORDANA LINE AS |
| NOFU | NODFOS |
