| NAC | NC | 345 | Northern Air Cargo |
| NAG | | | Northern Air Charter |
| NAM | 7N | | Air Manitoba |
| NAN | | | Nationair-National Airlines |
| NAO | XG | 455 | North American Airlines |
| NAX | DY | 328 | Norwegian Air Shuttle |
| NBK | F4 | | Albarka Air |
| NBO | | | Nebo Air Company |
| NCA | KZ | 933 | Nippon Cargo Airlines |
| NCB | | | North Cariboo Flying Service |
| NCH | 3U | | Chanchangi Airlines |
| NCN | N4 | | National Airlines (Chile) |
| NCT | | | Nacional Transportes Aereos |
| NDM | | | Nadym Airlines |
| NDR | CK | 600 | Andesmar Lineas Aereas |
| NEC | 3Z | 741 | Necon Air |
| NEP | D5 | 448 | NEPC Airlines |
| NES | JH | 264 | Nordeste-Linhas Aereas Regionais |
| NGA | WT | | Nigeria Airlines |
| NGE | 8G | | Angel Airlines |
| NGK | | | Oriental Air Bridge |
| NGS | | | GAS Air Nigeria |
| NHA | CR | | Air Nove |
| NIG | NU | | Aerocontractors |
| NIS | 6Y | 930 | TACA/Nicaraguense de Aviación |
| NJA | | | Sky Air Cargo Services |
| NJS | NC | | National Jet Systems |
| NLB | L8 | | Novosibirsk Airlines |
| NLY | HG | | Niki |
| NMB | SW | 186 | Air Namibia |
| NMO | ID | | Air Normandie |
| NOD | DJ | | Nordic European Airlines |
| NOS | JA | 583 | Norway Airlines |
| NOV | RD | | Avianova |
| NPT | | | Atlantic Airlines |
| NRC | | | North Sea Airways |
| NRL | | | Nolinor Aviation |
| NSA | | | Nile Safaris Aviation |
| NSE | ZT | | Satena |
| NSR | | | National Air Charters |
| NTH | | | Hokkaido Air System |
| NTK | | | Beriev TANTK Airline |
| NTL | | | Air Anatolia |
| NTN | YJ | | National Airlines (South Africa) |
| NTS | | 595 | Cirrusair |
| NTW | CE | 567 | Nationwide Air |
| NVD | | | Nordic Solutions Air Service |
| NVR | 1I | | Novair |
| NWA | NW | 012 | Northwest Airlines |
| NWC | DF | | New ACS |
| NWD | | | Northwest Air Services |
| NWT | NV | 668 | NWT Air |
| NWW | | | North West Airlines (Australia) |
| NXA | NX | 151 | Nationair Canada |
| NZA | ZQ | 941 | Ansett New Zealand |
| NZM | NM | 445 | Mount Cook |
