| 1 | NAX | Norwegian Air Shuttle A.S. t/a Norwegian | IATA: DY, Callsign: Nor Shuttle, IATA Prefix: 328, IATA designator changed from N8. IATA designator changed to DY. | N | AVCODES |
| 2 | NAX | Norwegian Air Shuttle A.S. | IATA: N8, Callsign: Nor Shuttle, Designator N8 recalled by IATA | N | AVCODES |
| 3 | NAX | A.S. Air-X | Callsign: Scanbird, | FIN | AVCODES |
| 4 | NAX | Norwegian Air Shuttle A.S. t/a Norwegian | IATA: DY, Callsign: Nor Shuttle, IATA Prefix: 328, IATA designator changed from DY*. IATA designator previously changed from N8. | N | AVCODES |
| 5 | NAX | Norwegian Air Shuttle | IATA: DY | | ICAO1 |
| 6 | NAX | National Ammonia Co., Inc. | 7/1930 | | NAKINA |
| 7 | NAX | National Ammonia Co. | 7/1923 | | NAKINA |
| 8 | NAX | The National Ammonia Co. | 8/1920 | | NAKINA |
| 9 | NAX | NATIONAL AMMONIA CO. | | | PWRC |
| 10 | NAXA | NINTH AFRAMAX TANKER CORPORATION | | | SCAC4 |
| 11 | NAXE | NACO EXPRESS | | | SCAC4 |
| 12 | NAXI | N A TRANSPORT INC | | | SCAC4 |
| 13 | NAXL | NORTH AMEX LOGISTICS INC | | | SCAC4 |
| 14 | NAXO | NATIONAL AUTO TRANSPORT | | | SCAC4 |
| 15 | NAXP | NORTH ALABAMA EXPRESS, INC | | | SCAC3 |
| 16 | NAXP | NAPOLEON EXPRESS SA DE CV | | | SCAC4 |
| 17 | NAXQ | NEW AMERICA TRANSPORTATION INC | | | SCAC4 |
| 18 | NAXS | N A T S | | | SCAC4 |
| 19 | NAXT | N AMERIX TRAFFIC INC | | | SCAC3 |
| 20 | NAXU | NAPHTACHIMIE | | | SCAC3 |
