| 1 | NRS | Atlantic Richfield Company | Callsign: North Slope, | USA | AVCODES |
| 2 | NRS | Norwegian Air UK Ltd. | IATA: DI, Callsign: Norworld, ICAO Callsign changed to Rednose. | GB | AVCODES |
| 3 | NRS | Norwegian Air UK Ltd. | IATA: DI, Callsign: Rednose, Ceased operations on 01 November 2021. ICAO Callsign changed from Norworld. | GB | AVCODES |
| 4 | NRS | Atlantic Richfield Company | | | ICAO1 |
| 5 | NRS | Nordic Railservices GmbH | Lübeck | D | privat-bahn.de |
| 6 | NRS | Dutch Rhine Railway Company | | NL | TRAFFIC |
| 7 | NRS | Nordic Rail Service GmbH | | DE | VKM |
| 8 | NRSC | NORTHERN STAR CARTAGE | | | SCAC3 |
| 9 | NRSE | NORSEMAN ALLFOAM | | | SCAC4 |
| 10 | NRSG | Nordic Rail Service GmbH | Real: NRS | D | TRAFFIC |
| 11 | NRSH | NORTHSHORE TAXI | | | SCAC3 |
| 12 | NRSH | NATIONAL RETAIL TRANSPORTATION INC | | | SCAC4 |
| 13 | NRSI | NORCROSS TRANSFER & STORAGE INC | | | SCAC3 |
| 14 | NRSK | NORRIS TRUCKING | | | SCAC4 |
| 15 | NRSL | NORDCO RAIL SERVICES LLC | | | SCAC4 |
| 16 | NrSlJ | Norra Södermanlands Järnväg | 1895 - 1931 | S | svenska-lok.se |
| 17 | NRSM | NORSEME | | | SCAC4 |
| 18 | NRSN | NR TRANSPORTATION INC | | | SCAC3 |
| 19 | NRSO | NORRIS SUPPLY COMPANY INC | | | SCAC3 |
| 20 | NRSQ | NORRIS TRANSFER & STORAGE CO INC | | | SCAC3 |
| 21 | NRSR | NORTHSHORE TRANSPORTATION | | | SCAC3 |
| 22 | NRSS | NORCROSS CHARTER INC | | | SCAC3 |
| 23 | NRST | NORTHERN STATES TRUCKING INC | | | SCAC4 |
| 24 | NRSU | NRS CORPORATION | | J | BIC |
| 25 | NRSU | NIPPON RIKU-UN SANGYO CO. | | | PWRC |
| 26 | NRSU | Nippon Riku-un Sangyo | | | RSRV |
| 27 | NRSU | NIPPON RIKU-UN SANGYO CO | | | SCAC4 |
| 28 | NRSV | NATIONWIDE RAIL SERVICES INC | | | SCAC4 |
| 29 | NRSW | NEW RESOURCE SHIPPING INC | | | SCAC4 |
| 30 | NRSY | NORAMCO SYSTEMS INC | | | SCAC3 |
