| 1 | NWR | Northwest Regional Airlines | IATA: FY, Designator FY recalled by IATA. Name changed from Broome Aviation Pty. Ltd. | AUS | AVCODES |
| 2 | NWR | Northwest Regional Airlines | IATA: FY, Designator FY reinstated by IATA. Name changed from Broome Aviation Pty. Ltd. | AUS | AVCODES |
| 3 | NWR | Northwest Regional Airlines | IATA: FY | | ICAO1 |
| 4 | NWR | Nashville & Western R.R. Corp. | added 1/2002; eliminated 7/2002; added 7/2005; 7/2005 | | NAKINA |
| 5 | NWR | NASHVILLE & WESTERN RAILROAD CORP. | | | PWRC |
| 6 | NWR | Nashville and Western Railroad | | | RSRV |
| 7 | NWR | NASHVILLE & WESTERN RAILROAD CORP | | | SCAC4 |
| 8 | NWR | Nashville and Western Railroad Corporation | | USA | TRAFFIC |
| 9 | NWRE | NORTHWIND REFRIGERATED EXPRESS INCO | | | SCAC3 |
| 10 | NWRE | NORTHWEST RECYCLING | | | SCAC4 |
| 11 | NWRF | NATIONWIDE REFRIGERATED TRANSPORT I | | | SCAC3 |
| 12 | NWRH | NEW ERA TRANSPORT LLC | | | SCAC4 |
| 13 | NWRI | NORFOLK & WESTERN ROCK ISLAND PULLMAN | | | PWRC |
| 14 | NWRL | NORTHWEST RAIL SERVICE | | | SCAC3 |
| 15 | NWRL | NORTHWEST TRUCK LINES INC | | | SCAC4 |
| 16 | NWRN | NATIONWIDE TRANSPORT LTD | | | SCAC4 |
| 17 | NWRQ | NIGHTCRAWLER TRANSPORT LLC | | | SCAC4 |
| 18 | NWRR | NORTHWEST ROAD & RAIL INC | | | SCAC3 |
| 19 | NWRR | NORTHWEST RETREADERS | | | SCAC4 |
| 20 | NWRS | NORTHWEST-REFRIGERATION & SALES | | | SCAC3 |
| 21 | NWRS | NEW RULER SHIPPING COMPANY LIMITED | | | SCAC4 |
| 22 | NWRT | NEW RHOADS TRANSPORTATION INC | | | SCAC4 |
| 23 | NWRU | NEW WAY (H.K.) INTERNATIONAL LIMITED | | PRC | BIC |
| 24 | NWRX | North American Car Corp. | added 4/1966; 10/1966-4/1970; eliminated 1/1971 | | NAKINA |
| 25 | NWRX | North American Car Corp. | added 4/66; 10/66-4/70; eliminated 1/71 | | NRHS |
| 26 | NWRX | *NORTH AMERICAN CAR CORP. | | | PWRC |
| 27 | NWRX | *NORTHWEST RAILROAD | | | PWRC |
| 28 | NWRX | Niagara and Western Railway (Bergen Passaic Rail) | | | RSRV |
