| 5401 | NRVF | NORTH RIVER FUEL INC | | | SCAC4 |
| 5402 | NRVL | NARVAL SHIPPING COPR. | | | SCAC3 |
| 5403 | NRVN | NORVANCO INTERNATIONAL INC | | | SCAC4 |
| 5404 | NRVS | NOR-VAN SEAFOOD LTD | | | SCAC4 |
| 5405 | NRW | Polizeifliegerstaffel Nordrhein-Westfalen | Callsign: Hummel, | D | AVCODES |
| 5406 | NRW | Polizeifliegerstaffel Nordrhein-Westfalen | | | ICAO1 |
| 5407 | NRW | Nord-Rhein-Westfalien design | Many bus companies using the same paint scheme~ | D | TRAFFIC |
| 5408 | NRWC | NORTHWEST COOPERAGE CO INC | | | SCAC3 |
| 5409 | NRWC | NORWICH DISCOUNT OIL INC | | | SCAC4 |
| 5410 | NRWE | NORTHWEST TRANSPORT INCORPORATED | | | SCAC3 |
| 5411 | NRWM | N R W MANUFACTURING INC | | | SCAC4 |
| 5412 | NRWS | NORTHWESTERN COLORADO PIPE & STORAG | | | SCAC3 |
| 5413 | NRWT | NORWOOD TRUCKING COMPANY | | | SCAC3 |
| 5414 | NRWY | NORTH WAY PETROLEUM TRANSPORT INC | | | SCAC3 |
| 5415 | NRX | Filder Air Service Airlines | IATA: M3, Callsign: Noris, Merged into European Air Express | D | AVCODES |
| 5416 | NRX | European Air Express | IATA: M3, Callsign: Noris, ICAO designator changed to EAE, Formely Filder Air Servic Airlines | D | AVCODES |
| 5417 | NRX | European Air Express | IATA: M3, Callsign: Noris, IATA designator changed to 7Y*. ICAO designator changed to EAE. Formely Filder Air Servic Airlines | D | AVCODES |
| 5418 | NRX | European Air Express | IATA: 7Y, Callsign: Noris, IATA designator changed to M3*. ICAO designator changed to EAE. Formely Filder Air Servic Airlines | D | AVCODES |
| 5419 | NRX | Norse Air Charter | Callsign: Norse Air, | ZA | AVCODES |
| 5420 | NRX | Norse Air Charter | | | ICAO1 |
| 5421 | NRXP | NATIONAL ROADRUNNERS XPRESS INC | | | SCAC3 |
| 5422 | NRXS | NORTHCUTT REFRIGERATED EXPRESS INC | | | SCAC3 |
| 5423 | NRYI | NICHOLS, RAY INC | | | SCAC4 |
| 5424 | NRZ | Servicios Aereos Monarrez, S.A. de C.V. | Callsign: Monarrez, | MEX | AVCODES |
| 5425 | NRZ | Servicios Aereos Monarrez | | | ICAO1 |
| 5426 | NRZ | National Railways of Zimbabwe | | ZW | TRAFFIC |
| 5427 | NRZB | NAUERTZ BROTHERS TRUCKING & EXCAVAT | | | SCAC3 |
| 5428 | NRZO | NIETO RODRIGUEZ, SACRAMENTO | | | SCAC4 |
| 5429 | NS | Silk Route Airways | ICAO: GSR, Callsign: Silkroute Airways, Name changed to Caucasus Airlines, ICAO desigantor changed to SRJ. ICAO callsign changed to Caucasus. | GE | AVCODES |
| 5430 | NS | NFD Nuernberger Flugdienst Luftverkehrs AG | ICAO: NFD, Callsign: Flamingo, Merged into Eurowings | D | AVCODES |
| 5431 | NS | Northeast Airlines Ltd. | Callsign: Norjet, Merged into BEA. | GB | AVCODES |
| 5432 | NS | Caucasus Airlines | ICAO: SRJ, Callsign: Caucasus, Ceased operations. Name changed from Silk Route Airways. ICAO designator changed from GSR. ICAO callsign changed from Silkroute Airways | GE | AVCODES |
| 5433 | NS | Northeast Airlines Co. Ltd. | ICAO: DBH, IATA Prefix: 836, Name changed to Hebei Airlines. Taken over by Sichuan Airlines and renamed Hebei Airlines. | PRC | AVCODES |
| 5434 | NS | Hebei Airlines Co., Ltd. | ICAO: HBH, Callsign: Hebei Air, IATA Prefix: 836, Name changed from Northeast Airlines Co. Ltd. | PRC | AVCODES |
| 5435 | NS | Norfolk Southern Ry. Co. (Norfolk Southern) | 7/2005 | | NAKINA |
| 5436 | NS | Norfolk Southern Ry. Co. | added 1/1991; 1/1994-7/2000 | | NAKINA |
| 5437 | NS | Southern Ry. System | eliminated 1/1991 | | NAKINA |
| 5438 | NS | Norfolk Southern Ry. Co. | 1/1975-1/1980 | | NAKINA |
| 5439 | NS | Norfolk Southern R.R. (Co.) | 8/1920-10/1966 | | NAKINA |
| 5440 | NS | Norfolk Southern R.R. | 4/38-10/66 | | NRHS |
| 5441 | NS | Norfolk Southern Ry. Co. | 1/75-1/80 | | NRHS |
| 5442 | NS | Southern Ry. System | eliminated 1/91 | | NRHS |
| 5443 | NS | Norfolk Southern Ry. Co. | added 1/91; 1/94-7/2000 | | NRHS |
| 5444 | NS | NORFOLK SOUTHERN [SOUTHERN RWY; NORFOLK SOUTHERN (OLD)] | | | PWRC |
| 5445 | NS | Norfolk Southern Railway | | | RSRV |
| 5446 | NS | NORFOLK SOUTHERN RAILWAY COMPANY (N | | | SCAC4 |
| 5447 | NS | Nederlandse Spoorwegen | | NL | TRAFFIC |
| 5448 | NS | Nederlandse Spoorwegen | | NL | VKM |
| 5449 | NS&T | Niagara, St. Catharines & Toronto Ry. (Canadian National Rys.) | 8/1920-7/1936 | | NAKINA |
| 5450 | NS&T | CANADIAN NATIONAL RWYS. [NIAGARA, ST. CATHARINES & TORONTO RWY.} | | | PWRC |
| 5451 | NSA | Nile Safaris Aviation | Callsign: Nile Safaris, | SUD | AVCODES |
| 5452 | NSA | Nile Safaris Aviation | | | ICAO1 |
| 5453 | NSA | Norfolk Southern Railway Company | Real: NS | USA | TRAFFIC |
| 5454 | NSAA | NORTHERN SALES | | | SCAC4 |
| 5455 | NSAB | NORTH STAR ONE (1) AUTO SALES & REN | | | SCAC4 |
| 5456 | NSAC | NORTH STAR AIR CARGO INC | | | SCAC4 |
| 5457 | NSACZ | Miejskie Przedsiębiorstwo Komunikacyjne w Nowym Sączu | | PL | TRAFFIC |
| 5458 | NSAE | NORTH SHORE AIR EXPRESS INC | | | SCAC3 |
| 5459 | NSAI | NATIONAL SERV-ALL OF FORT WAYNE | | | SCAC3 |
| 5460 | NSAI | NORTHSTAR AEROSPACE INC | | | SCAC4 |
| 5461 | NSAJ | NOSAT | | | SCAC4 |
| 5462 | NSAL | NORTE SUR AMERICANA LOGISTICS | | | SCAC3 |
| 5463 | NSAR | NORTH STAR TRUCKING SERVICES INC | | | SCAC4 |
| 5464 | NSAT | NAFTOMAR SHIPPING AND TRADING CO LT | | | SCAC3 |
| 5465 | NSAT | NAFTOMAR SHIPPING AND TRADING CO LT | | | SCAC4 |
| 5466 | NSAU | THE NATIONAL SHIPPING CO OF SAUDI ARABIA | | SA | BIC |
| 5467 | NSAU | NATL SHIPPING OF SAUDI ARABIA | | | SCAC3 |
| 5468 | NSAU | NATIONAL SHIPPING CO OF SAUDI ARABI | | | SCAC4 |
| 5469 | NSAW | NORCO (SAGINAW) | | | SCAC4 |
| 5470 | NSAX | National Steel Corp. | 1/1975; added 1/1976; 1/1980-7/2005 | | NAKINA |
| 5471 | NSAX | National Steel Corp. | 1/75-7/2000 | | NRHS |
| 5472 | NSAX | NATIONAL STEEL CORPORATION | | | PWRC |
| 5473 | NSAX | National Steel Corporation | | | RSRV |
| 5474 | NSAX | NATIONAL STEEL CORPORATION | | | SCAC4 |
| 5475 | NSB | | | N | TRAFFIC |
| 5476 | NSB | Norges Statsbaner BA | | NO | VKM |
| 5477 | NSBA | Neunkirchner Strassenbahn | City: Neunkirchen | D | TRAFFIC |
| 5478 | NSBAG | Neusiedler Seebahn | | AT | VKM |
| 5479 | NSBE | NISBET OIL COMPANY | | | SCAC4 |
| 5480 | NSBK | NEW STAR BOOKS LTD | | | SCAC4 |
| 5481 | NSBM | NESBITT, MIKE TRUCKING INC | | | SCAC4 |
| 5482 | NSBR | NUSSBAUMER TRANSPORTATION | | | SCAC3 |
| 5483 | NSBR | NINE ZERO SEVEN EIGHT-FOUR NINE FOU | | | SCAC4 |
| 5484 | NSBS | NORTH STAR BUS SERVICE INC | | | SCAC3 |
| 5485 | NSBT | NESBIT TRANSPORTATION COMPANY | | | SCAC3 |
| 5486 | NSBT | NASSER | | | SCAC4 |
| 5487 | NSBU | NATIONAL CENTE FOR ATMOSPHERIC | | | SCAC3 |
| 5488 | NSC | Société de Transport Aerien de Mauritanie | Callsign: Trans-Societe, | RIM | AVCODES |
| 5489 | NSC | Societe De Transport Aerien De Mauritanie | | | ICAO1 |
| 5490 | NSC | Newtex S.S. | 1/1975-1/1980 | | NAKINA |
| 5491 | NSC | Newtex S.S. | 1/75-1/80 | | NRHS |
| 5492 | NSC | *NATIONAL STEEL CAR, LTD. | | | PWRC |
| 5493 | NSC | *NEWTEX STEAMSHIP | | | PWRC |
| 5494 | NSC | National Steel Car | | | RSRV |
| 5495 | NSC | NORFOLK SOUTHERN CORPORATION | | | SCAC4 |
| 5496 | NSC | NS Cargo | | NL | TRAFFIC |
| 5497 | NSCA | NATIONWIDE SHIPPERS COOPERATIVE ASS | | | SCAC3 |
| 5498 | NSCA | NATIONWIDE SHIPPERS COOPERATIVE ASS | | | SCAC4 |
| 5499 | NSCB | NATIONAL SCHOOL BUS SERVICE INC | | | SCAC3 |
| 5500 | NSCB | NINE ZERO THREE TWO-SEVEN NINE THRE | | | SCAC4 |
