| 1 | NAL | Northway Aviation Ltd. | Callsign: Northway, | CDN | AVCODES |
| 2 | NAL | National Airlines | IATA: NA, Callsign: National, Merged in Pan Am during 1980. | USA | AVCODES |
| 3 | NAL | National Airlines | IATA: NA | | ICAO1 |
| 4 | NAL | Northway Aviation Ltd | | | ICAO1 |
| 5 | NAL | Nagel Baumaschinen Magdeburg GmbH | | DE | VKM |
| 6 | NALA | NORTH ALABAMA TRANSFER INC | | | SCAC3 |
| 7 | NALB | NORTH AMERICAN LOGISTICS INC | | | SCAC4 |
| 8 | NALC | NATIONAL CARRIERS, INC. | | | SCAC3 |
| 9 | NALC | NATIONAL CARRIERS INC | | | SCAC4 |
| 10 | NALE | NATIONAL LEAD | | | PWRC |
| 11 | NALE | NATIONAL EXPO DRAYAGE | | | SCAC3 |
| 12 | NALE | NATIONAL EXPO DRAYAGE | | | SCAC4 |
| 13 | NALG | NAL TRUCKING | | | SCAC3 |
| 14 | NALH | NEW ALLIANCE SHIPPING INC | | | SCAC4 |
| 15 | NALI | NATIONAL FREIGHT LINES INC. | | | SCAC3 |
| 16 | NALI | NATIONAL FREIGHT LINES INC. | | | SCAC4 |
| 17 | NALK | N A L TRUCKING | | | SCAC3 |
| 18 | NALL | NALLS WRECKER SERVICE | | | SCAC4 |
| 19 | NALM | NORTH ALABAMA MOVING & STORAGE INC | | | SCAC3 |
| 20 | NALS | NORTH AMERICAN LOGISTICS SERVICES L | | | SCAC4 |
| 21 | NALU | NORWEGIAN AMERICAN LINES | | | PWRC |
| 22 | NALU | Norwegian American Lines | | | RSRV |
| 23 | NALU | NORDURAL HF NORDIC ALUMINIUM | | | SCAC4 |
| 24 | NALV | NORTH AMERICAN LOGISTICS SERVICES L | | | SCAC4 |
| 25 | NALX | Nalco Chemical Co. | added 7/1959; 4/1961-4/1970; eliminated 1/1975; added 10/1984; eliminated 1/1991 | | NAKINA |
| 26 | NALX | National Aluminate Corp. — Catalyst Division | eliminated 7/1959 | | NAKINA |
| 27 | NALX | North American Car Corp. | 7/1932-4/1938 | | NAKINA |
| 28 | NALX | National Aluminate Corp. | added 10/1954; 10/1957 | | NAKINA |
| 29 | NALX | National Aluminate Corp. | Oct-57 | | NRHS |
| 30 | NALX | National Aluminate Corp. -- Catalyst Division | eliminated 7/59 | | NRHS |
| 31 | NALX | Nalco Chemical Co. | added 7/59; 4/61-4/70; eliminated 1/75; added 10/84; eliminated 1/91 | | NRHS |
| 32 | NALX | *NORTH AMERICAN CAR CORP. | | | PWRC |
| 33 | NALX | *NALCO CHEMICAL CO. [NATIONAL ALUMINATE CORP.] | | | PWRC |
| 34 | NALX | Nalco Chemical (NASA Railroad) | | | RSRV |
| 35 | NALX | NALCO CHEMICAL CO | | | SCAC3 |
| 36 | NALX | NATIONAL ALABAMA CORPORATION | | | SCAC4 |
| 37 | NALZ | *NAVAL LEAD | | | PWRC |
| 38 | NALZ | *NEPTUNE ORIENT LINES, LTD. | | | PWRC |
| 39 | NALZ | Neptune Orient Lines | | | RSRV |
| 40 | NALZ | NEPTUNE ORIENT LINES, LTD. | | | SCAC3 |
| 41 | NALZ | NEPTUNE ORIENT LINES, LTD. | | | SCAC4 |
