| 1 | N | Verkehrs-Aktiengesellschaft Nürnberg | Real: VAG, City: Nürnberg | D | TRAFFIC |
| 2 | N&C | Nashville, Chattanooga & St. Louis Ry. | 7/1923-4/1961 | | NAKINA |
| 3 | N&C | Nashville Chattanooga & St. Louis Ry. | 4/38-4/61 | | NRHS |
| 4 | N&C | NASHVILLE, CHATTANOOGA & ST. LOUIS RWY. | | | PWRC |
| 5 | N&NE | New Orleans & Northeastern R.R. | 1/1941-7/1954 | | NAKINA |
| 6 | N&NE | New Orleans & Northeastern R.R. | Jan-52 | | NRHS |
| 7 | N&NE | NEW ORLEANS & NORTHEASTERN RAILROAD | | | PWRC |
| 8 | N&PB | Norfolk & Portsmouth Belt Line R.R. (Co.) | 8/1920-10/1966 | | NAKINA |
| 9 | N&PB | Norfolk & Portsmouth Belt Line R.R. | 4/38-10/66 | | NRHS |
| 10 | N&PB | NORFOLK & PORTSMOUTH BELT LINE RAILROAD CO. | | | PWRC |
| 11 | N&SS | The Newburgh & South Shore Ry. Co. | 8/1920-7/1936 | | NAKINA |
| 12 | N&SS | NEWBURGH & SOUTH SHORE RWY. CO. | | | PWRC |
| 13 | N&W | Norfolk and Western Ry. | 1/1941-10/1966 | | NAKINA |
| 14 | N&W | Norfolk and Western Ry. | 1/52-10/66 | | NRHS |
| 15 | N&W | NORFOLK & WESTERN RWY. | | | PWRC |
| 16 | n/a | BritRail Ltd. | IATA: 6R, Designator 6R* recalled by IATA. Railway Service | GB | AVCODES |
| 17 | N0 | Norse Atlantic Airways AS | ICAO: NBT, Callsign: Longship, IATA Prefix: 506, | N | AVCODES |
| 18 | N1 | Nextres AB | Designator N1 recalled by IATA. Computer Reservations Systems (CRS) | S | AVCODES |
| 19 | N1 | Darwin travel Technology, Inc. | Computer Reservations Systems (CRS) | IND | AVCODES |
| 20 | N2 | Aerolineas Internacionales S.A. de C.V. | ICAO: LNT, Callsign: Lineaint, Designator N2 reinstated by IATA | MEX | AVCODES |
| 21 | N2 | Federal State Unitary Enterprise Daghestan Airlines | ICAO: DAG, Callsign: Dagal, IATA Prefix: 394, | RUS | AVCODES |
| 22 | N2 | Kabo Airlines Limited | ICAO: QNK, Callsign: Kabo, Designator N2* recalled by IATA | WAN | AVCODES |
| 23 | N2 | Jet Charter, Inc. | ICAO: JCT, Callsign: Jet Charter, IATA Prefix: 830, | USA | AVCODES |
| 24 | N2 | Trans Mediterranean Airways S.A.L. | ICAO: TMA, Callsign: Tango Lima, IATA Prefix: 673, Ceased operations. | RL | AVCODES |
| 25 | N2 | Aero Contractors Company of Nigeria Ltd. | ICAO: NIG, Callsign: Aeroline, | WAN | AVCODES |
| 26 | N3 | Omskavia Airline, Public Joint-Stock Society | ICAO: OMS, Callsign: Omsk, IATA Prefix: 753, | RUS | AVCODES |
| 27 | N3 | Miravia Romanian Airlines | ICAO: MRV, Callsign: Miravia, Designator N3 recalled by IATA | RO | AVCODES |
| 28 | N3 | Aerolineas MAS, S.A. | ICAO: MAF, Callsign: Airmas, | DOM | AVCODES |
| 29 | N3 | Veula El Salvador S.A. de C.V. | ICAO: VOS, Callsign: Jetsal, IATA Prefix: 370, AOC granted 03 june 2019. | ES | AVCODES |
| 30 | N4 | National Airlines (Chile), S.A. | ICAO: NCN, Callsign: National, Designator recalled by IATA | RCH | AVCODES |
| 31 | N4 | Minerva Airlines | ICAO: MTC, Callsign: Air Minerva, Ceased operations on 25 October 2003 due bankruptcy. IATA designator changed from Q2*, then changed from Q9* | I | AVCODES |
| 32 | N4 | NAC Network Inc. d/b/a NACNET Inc. | Designator N4* recalled by IATA | USA | AVCODES |
| 33 | N4 | LLC "Nord Wind" | ICAO: NWS, Callsign: Nordland, IATA Designator changed to N4. | RUS | AVCODES |
| 34 | N4 | LLC "Nord Wind" | ICAO: NWS, Callsign: Nordland, IATA Designator changed from N4*. | RUS | AVCODES |
| 35 | N5 | Kyrgyz International Airlines | ICAO: KRS, Callsign: Kyrmal, IATA Prefix: 987, ICAO designator changed to KYL | KS | AVCODES |
| 36 | N5 | Mediterranean Aviation Company Ltd. d/b/a Medavia Ops | ICAO: MDM, Callsign: Medavia, | M | AVCODES |
| 37 | N5 | Les Investissements Nolinor Inc. t/a Nolinor Aviation | ICAO: NRL, Callsign: Nolinor, Founded in 1992. | CDN | AVCODES |
| 38 | N5 | Kyrgyz International Airlines | ICAO: KYL, Callsign: Kyrmal, IATA Prefix: 987, ICAO designator changed from KRS | KS | AVCODES |
| 39 | N5 | Skagway Air Service, Inc. | ICAO: SGY, Callsign: Skagway Air, IATA designator changed from 7J* | USA | AVCODES |
| 40 | N5 | The Administration of Norfolk Island d/b/a Norfolk Air | Commenced operations in May 2006. Ceased opeations on 26 February 2012. | NF | AVCODES |
| 41 | N6 | Aero Continente | ICAO: ACQ, Callsign: Aero Continente, IATA Prefix: 929, Name changed to Nuevo Continente, S.A. Operting License was revoked by Chilean Avition officials on 10 June 2002. | PE | AVCODES |
| 42 | N6 | Nomad Aviation (Pty) Ltd t/a Bay Air Aviation | ICAO: NMD, Callsign: Nomad Air, Operates flights obo flyafrica.com | NAM | AVCODES |
| 43 | N6 | Nuevo Continente, S.A. | ICAO: ACQ, Callsign: Aero Continente, IATA Prefix: 929, Name changed from Aero Continente | PE | AVCODES |
| 44 | N6 | Air One Nine | ICAO: ONR, Callsign: Eder, Designator N6 recalled by IATA | LAR | AVCODES |
| 45 | N6 | Alpine Air Pvt. Ltd. | ICAO: AYL, Callsign: Alpine Nepal, Suspended operations. | NEP | AVCODES |
| 46 | N6 | TCA LLC | ICAO: TZS, Callsign: Toka, Name changed from The Cargo Airlines. | GE | AVCODES |
| 47 | N663 | ROCKET EXPRESS | | | SCAC3 |
| 48 | N7 | National Airlines, Inc. | ICAO: NAN, Callsign: Nation Air, IATA Prefix: 007, Ceased operations on 06 November 2002. | USA | AVCODES |
| 49 | N7 | Neptune Air Sdn Bhd | ICAO: NEP, Callsign: Warisan, IATA Prefix: 264, Name changed to My Jet Xpress Airlines Sdn.Bhd. dba My Jet Xpress | MAL | AVCODES |
| 50 | N7 | Lagun Air, S.L. | ICAO: JEV, Callsign: Lagunair, IATA Prefix: 504, Ceased operations on 09 October 2008 | E | AVCODES |
| 51 | N7 | NHT Lineas Aereas | ICAO: NHG, Name changed to Brava Linhas Aereas | BR | AVCODES |
| 52 | N7 | Brava Linhas Aereas | ICAO: NHG, Name changed from NHT Lineas Aereas | BR | AVCODES |
| 53 | N7 | Nordic Regional Airlines Oy | ICAO: FCM, Callsign: Finncomm, Formerly Flybe Finland Oy. | FIN | AVCODES |
| 54 | N7 | My Jet Xpress Airlines Sdn.Bhd. dba My Jet Xpress | ICAO: NEP, Callsign: Warisan, IATA Prefix: 264, Name changed from Neptune Air Sdn Bhd. | MAL | AVCODES |
| 55 | N8 | Sichuan Airlines Co. Ltd. | ICAO: CSC, Callsign: Chuanhang, IATA designator changed to 3U | PRC | AVCODES |
| 56 | N8 | Salaam Express Air Services | ICAO: SEK, IATA Prefix: 547, Ceased operations. | EAK | AVCODES |
| 57 | N8 | Norwegian Air Shuttle A.S. | ICAO: NAX, Callsign: Nor Shuttle, Designator N8 recalled by IATA | N | AVCODES |
| 58 | N8 | CR Airways Limited | ICAO: CRK, Callsign: Bauhinia, IATA Prefix: 851, Name changed to Hong Kong Airlines Limited. Designator N8* reinstated by IATA | HK | AVCODES |
| 59 | N8 | Hong Kong Airlines Limited | ICAO: CRK, Callsign: Bauhinia, IATA Prefix: 851, IATA designator changed to HX w.e.f. 27 May 2007. Name changed from CR Airways Limited. Designator N8* reinstated by IATA | HK | AVCODES |
| 60 | N8 | National Air Cargo Group, Inc. d/b/a National Airlines | ICAO: MUA, Callsign: Murray Air, IATA Prefix: 416, Name changed from Murray Air, Inc. ICAO designator changed to NCR. Name changed from Murray Aviation, Inc. | USA | AVCODES |
| 61 | N8 | National Air Cargo Group, Inc. d/b/a National Airlines | ICAO: NCR, Callsign: National Cargo, IATA Prefix: 416, Name changed from Murray Air, Inc. ICAO designator changed from MUA. Name changed from Murray Aviation, Inc. | USA | AVCODES |
| 62 | N9 | North Coast Aviation Pty Ltd. | ICAO: AOH, | PNG | AVCODES |
| 63 | N9 | Niger Air Continental | ICAO: NCN, Callsign: Mena, | RN | AVCODES |
| 64 | N9 | Joint-Stock Company Nordic Solutions | | LT | AVCODES |
| 65 | N9 | Kabo Airlines Limited | ICAO: QNK, Callsign: Kabo, Operations suspended. Designator N2* recalled by IATA | WAN | AVCODES |
| 66 | N9 | Nova Airlines AB | ICAO: NVR, Callsign: Navigator, IATA Prefix: 326, IATA designator changed to 1I | S | AVCODES |
| 67 | N9 | Shree Airlines Pvt. Ltd. | ICAO: SHA, Callsign: Shree-Air, Founded in 1999. | NEP | AVCODES |
| 68 | NA | North American Airlines, Inc. | ICAO: NAO, Callsign: North American, IATA Prefix: 455, Founded in 1989. Ceased operations on 07 June 2014. Designator NA reinstated by IATA. IATA designator changed from XG | USA | AVCODES |
| 69 | NA | Executive Air Charter | ICAO: EXK, IATA designator changed to OW | PRI | AVCODES |
| 70 | NA | National Airlines | ICAO: NAL, Callsign: National, Merged in Pan Am during 1980. | USA | AVCODES |
| 71 | NA | Espana, Direccion General De Aviacion Civil Y Telecomunicaciones | ICAO: ENA, Callsign: ENA, Designator NA recalled by IATA | E | AVCODES |
| 72 | NA | Nesma Airlines Company Ltd. | ICAO: NMA, Callsign: Nesma, Commenced operations on on 18 July 2010. | ET | AVCODES |
| 73 | NAA | National Oceanic And Atmospheric Administration | Callsign: Noaa, ICAO designator changed to NOA | USA | AVCODES |
| 74 | NAA | Airmore Aviation | IATA: MO, Callsign: National, | GB | AVCODES |
| 75 | NAA | Norwegian Air Argentina S.A.U. | IATA: DN, Callsign: Noruega, Commenced operations on 16 October 2018. | RA | AVCODES |
| 76 | NAA | National Oceanic and Atmospheric Administration | | | ICAO1 |
| 77 | NAAB | NAAB, STEVE | | | SCAC3 |
| 78 | NAAB | NATIVE DAWN FISHING LTD | | | SCAC4 |
| 79 | NAAD | NEBRASKA ATLANTIC TRANSPORTATION IN | | | SCAC4 |
| 80 | NAAE | NOBODY AUTO TRANSPORT INC | | | SCAC4 |
| 81 | NAAF | NORTH AMERICAN TRANSPORT SERVICES L | | | SCAC4 |
| 82 | NAAF | Namibian Air Force | | NAM | TRAFFIC |
| 83 | NAAG | NORTH AMERICAN AGENCIES OF TEXAS | | | SCAC3 |
| 84 | NAAG | NORTH AMERICAN CARRIERS INC | | | SCAC4 |
| 85 | NAAR | NAVIERAS ARMAS | | | SCAC3 |
| 86 | NAAS | NORTH AMERICAN AUTO LOGISTICS LLC | | | SCAC4 |
| 87 | NAAT | NATIONAL TRANSIT LEASING CORP | | | SCAC3 |
| 88 | NAB | Mina Airline Company | | ET | AVCODES |
| 89 | NAB | Niger Air Cargo | IATA: NO, Callsign: Niger Cargo, IATA Prefix: 591, | RN | AVCODES |
| 90 | NAB | Mina Airline Company | | | ICAO1 |
| 91 | NABC | NATIONAL BULK CARRIERS INC | | | SCAC3 |
| 92 | NABD | NEBI AND SONS TRUCKING | | | SCAC4 |
| 93 | NABF | NORTH ATLANTIC BALTIC FREIGHT CONFE | | | SCAC3 |
| 94 | NABG | NATIONAL BAGGAGE SERVICE | | | SCAC3 |
| 95 | NABG | NAVARROS TRUCKING | | | SCAC4 |
| 96 | NABH | NEW ABILITY SHIPPING INC | | | SCAC4 |
| 97 | NABI | NAB TRUCKING CO | | | SCAC3 |
| 98 | NABK | NATIONAL BOOK CONSOLIDATORS INC | | | SCAC3 |
| 99 | NABL | N A B TRUCKING LINE CORP | | | SCAC3 |
| 100 | NABR | NORTH AMERICAN BULK TRANSPORT INC | | | SCAC4 |
