| 1 | NG | Lauda Air Luftfahrt AG | ICAO: LDA, Callsign: Lauda Air, IATA Prefix: 231, Merged into Austrian Airlines. IATA Designator changed from LW | A | AVCODES |
| 2 | NG | Gill Aviation Ltd. | | GB | AVCODES |
| 3 | NG | Nyge Aero Trafikflyg AB | ICAO: NYG, Callsign: Nyge, Designator NG recalled by IATA | S | AVCODES |
| 4 | NG | Gill Aviation Ltd. | ICAO: GIL, Callsign: Gillair, | GB | AVCODES |
| 5 | NG | Aero Contractors Nigeria Limited | ICAO: NIG, Callsign: Aeroline, Ceased operations on 01 September 2016. Name changed from Aero Contractors Company of Nigeria Ltd. IATA Designator changed from NU* | WAN | AVCODES |
| 6 | NG | Al Naser Wings Airlines | ICAO: NAD, Callsign: Naser Wings, Ceased operations on 16 April 2019. | IRQ | AVCODES |
| 7 | NG | Al-Naser Airlines | ICAO: MHK, Callsign: Al-Naser, IATA designator changed from NR. Designator 6N recalled by IATA | IRQ | AVCODES |
| 8 | NG | NOVAIR LLC | ICAO: NAI, Callsign: Novair, Founded on 23 October 2020, as a subsidiary of Atlantis Armenian Airlines. | AM | AVCODES |
| 9 | NG | N.Y.K. LINE | | | PWRC |
| 10 | NGA | Nigeria Airways Ltd. | IATA: WT, Callsign: Nigeria, IATA Prefix: 087, Ceased operations | WAN | AVCODES |
| 11 | NGA | Nigeria Airways | | | ICAO1 |
| 12 | NGAE | NGA ENTERPRISES | | | SCAC4 |
| 13 | NGAI | NAIGAI NITTO CO LTD | | | SCAC4 |
| 14 | NGAL | NIGHTINGALE FARMS LIMITED | | | SCAC4 |
| 15 | NGAM | NORMAN, G A MARINE SERVICE | | | SCAC4 |
| 16 | NGAN | NG TRANSPORT | | | SCAC4 |
| 17 | NGB | Nordic Global Airlines Oy | IATA: NJ, Callsign: Nordic Global, Founded on 11 April 2011. Ceased opeation on 31 May 2015. Subsidiary of Finnair Group and Neff Capital Management. | FIN | AVCODES |
| 18 | NGC | Angoservice, Lda. | | ANG | AVCODES |
| 19 | NGC | Angoservice | | | ICAO1 |
| 20 | NGCA | NEW GREEN CITY AUTO REPAIR CENTRE I | | | SCAC4 |
| 21 | NGCD | NEXT GENERATION CARTAGE LTD | | | SCAC4 |
| 22 | NGCL | NATIONAL GYPSUM COMPANY | | | SCAC3 |
| 23 | NGCM | NAVARRO GUDINO, CLEMENTE | | | SCAC4 |
| 24 | NGCN | NOSEGAY COMPANIA NAVIERA SA | | | SCAC3 |
| 25 | NGCN | NMP GOLF CONSTRUCTION CORP | | | SCAC4 |
| 26 | NGCO | NORWEGIAN GAS CARRIERS | | | SCAC3 |
| 27 | NGCO | NORGAS CARRIERS AS | | | SCAC4 |
| 28 | NGCP | NEW GLORY CORPORATION | | | SCAC4 |
| 29 | NGCU | VALQUA NGC, INC. | | USA | BIC |
| 30 | NGCU | Nisshin Gulf Coast | | | RSRV |
| 31 | NGCX | National Gypsum (Canada) Ltd. | added 10/2003; eliminated 4/2004; 7/2005 (not listed) | | NAKINA |
| 32 | NGCX | Suburban Propane Nat-Gas Co. of New Jersey | added 1/1955; eliminated 1/1956 | | NAKINA |
| 33 | NGCX | Natural Gas Co. | 4/1947-7/1954; eliminated 1/1955 | | NAKINA |
| 34 | NGCX | Natural Gas Co. of N.J. | 1/1945-1/1946 | | NAKINA |
| 35 | NGCX | Natural Gas Co. | Jan-52 | | NRHS |
| 36 | NGCX | *SUBURBAN PROPANE NAT-GAS CO. OF NEW JERSEY [NATURAL GAS CO.] | | | PWRC |
| 37 | NGCX | +NATIONAL GYPSUM (CANADA) LIMITED | | | PWRC |
| 38 | NGCX | NATIONAL GYPSUM (CANADA) LTD | | | SCAC4 |
| 39 | NGCY | NIELSEN GRAIN COMPANY | | | SCAC4 |
| 40 | NGCZ | NORTHWEST GRAIN COOP | | | PWRC |
| 41 | NGDI | NU GAMMA DELIVERY INC | | | SCAC3 |
| 42 | NGDU | NESTLE UK&I | | GB | BIC |
| 43 | NGE | Angel Airlines Co., Ltd. | IATA: 8G, Callsign: Angel Air, Founded in 1997. Ceased operations in 2006. Designator 8G reinstated by IATA | T | AVCODES |
| 44 | NGE | Angel Airlines | | | ICAO1 |
| 45 | NGEL | NAGEL TRUCKING & MATERIALS INC | | | SCAC3 |
| 46 | NGEL | NORTHERN MARINE MANAGEMENT (DEUTSCH | | | SCAC4 |
| 47 | NGET | Nizhegorodelektrotrans | City: Nizhny Novgorod | RUS | TRAFFIC |
| 48 | NGEU | NIPPON GASES BELGIUM | | B | BIC |
| 49 | NGF | Angel Flight America | Callsign: Angel Flight, Name changed to Air Charity Network | USA | AVCODES |
| 50 | NGF | Air Charity Network | Callsign: Angel Flight, Name changed from Angel Flight America | USA | AVCODES |
| 51 | NGF | Angel Flight America | | | ICAO1 |
| 52 | NGFC | NEWS GROUP FREIGHT COMPANY, THE | | | SCAC4 |
| 53 | NGFS | NEAGLE FREIGHT SYSTEMS | | | SCAC4 |
| 54 | NGG | Air Trans NG Group | Callsign: Air Group, | MD | AVCODES |
| 55 | NGGT | NUGGETT TRANSPORTATION | | | SCAC3 |
| 56 | NGHH | NEWMAN & GOLDRING HEAVY HAULING, IN | | | SCAC3 |
| 57 | NGHK | NIGHT HAWK, INC | | | SCAC3 |
| 58 | NGHK | NIGHT HAWK INC | | | SCAC4 |
| 59 | NGHR | NIGHT TRANSPORTATION SERVICES OF NC | | | SCAC3 |
| 60 | NGHT | N G H TRUCKING INC | | | SCAC4 |
| 61 | NGI | Nigerian Global | Callsign: Air Global, ICAO designator changed to NGX | WAN | AVCODES |
| 62 | NGIC | NORTHERN GECKO INC | | | SCAC4 |
| 63 | NGIX | Northern Grain, Inc. | added 7/1974; 1/1975-1/1980; eliminated 10/1989; 1/1994 (not listed) | | NAKINA |
| 64 | NGIX | Northern Grain, Inc. | added 7/74; 1/75-1/80; eliminated 10/89; 1/94 | | NRHS |
| 65 | NGIX | NORTHERN GRAIN INC | | | PWRC |
| 66 | NGIX | Northern Grain | | | RSRV |
| 67 | NGK | Oriental Air Bridge Co. Ltd. | IATA: O3, Callsign: Oriental Bridge, IATA designator changed to OC. ICAO Designator changed to ORC. | J | AVCODES |
| 68 | NGK | Novair | IATA: EN, Callsign: Starjet, Ceased operations on 05 May 1990. | GB | AVCODES |
| 69 | NGK | Oriental Air Bridge | | | ICAO1 |
| 70 | NGKS | NICHIRO GYOGYO KAISHA CO LTD | | | SCAC3 |
| 71 | NGKT | NEIDERGERKE TRUCK CO | | | SCAC3 |
| 72 | NGKT | NIAGARA DISTRIBUTORS INC | | | SCAC4 |
| 73 | NGL | Nizhegorodsky Airlines | Callsign: Nizhnovavia, | RUS | AVCODES |
| 74 | NGL | Max Air Limited | IATA: NR, Callsign: Maxair Nigeria, Founded in 2008. Ceased operations | WAN | AVCODES |
| 75 | NGL | Max Air Limited | IATA: VM, Callsign: Maxair Nigeria, | WAN | AVCODES |
| 76 | NGLB | NR GROUP LOGISTICS LLC | | | SCAC4 |
| 77 | NGLC | NORTHEAST GEORGIA LOGISTICS LLC | | | SCAC4 |
| 78 | NGLD | NEW ENGLAND LIQUOR SALES CO INC CO | | | SCAC3 |
| 79 | NGLE | NAGLES, JIM, REBUILT TRUCK PARTS AN | | | SCAC3 |
| 80 | NGLH | NGL | | | SCAC4 |
| 81 | NGLI | NAGLE LINE INC | | | SCAC3 |
| 82 | NGLI | NATIONAL GLASS LTD | | | SCAC4 |
| 83 | NGLK | NAGEL, LARRY TRUCKING | | | SCAC3 |
| 84 | NGLL | NORTH GERMAN LLOYD | | | SCAC3 |
| 85 | NGLN | NGL TRANSPORTATION LLC | | | SCAC4 |
| 86 | NGLO | NGL TRANSPORT LLC | | | SCAC4 |
| 87 | NGLQ | NAGLE CORP, THE | | | SCAC3 |
| 88 | NGLR | NAUGLER TRANSPORT | | | SCAC4 |
| 89 | NGLV | NNR GLOBAL LOGISTICS (HK) LTD | | | SCAC4 |
| 90 | NGLW | NNR GLOBAL LOGISTICS (BEIJING) CO L | | | SCAC4 |
| 91 | NGML | NAVIGATOR GAS LLC | | | SCAC4 |
| 92 | NGMM | NORFINCH GLASS & MIRROR MFG LTD | | | SCAC4 |
| 93 | NGMX | North American Car Corp. | added 7/1959; 4/1961-4/1970; eliminated 11/1973 | | NAKINA |
| 94 | NGMX | North American Car Corp. | added 7/59; 4/61-4/70; eliminated 11/73 | | NRHS |
| 95 | NGMX | NORTH AMERICAN CAR CORP. | | | PWRC |
| 96 | NGN | LEAV Aviation GmbH | IATA: KK, Callsign: Yoda, Name changed from JOOT Aviation Project GmbH. | D | AVCODES |
| 97 | NGNQ | NAIGAI NITTO AMERICA INC. | | | SCAC3 |
| 98 | NGNQ | NAIGAI NITTO AMERICA INC | | | SCAC4 |
| 99 | NGNR | NGN TRANSPORT | | | SCAC4 |
| 100 | NGNT | NGN TRANSPORTATION | | | SCAC4 |
