| 1501 | NCYX | NATIONAL CYLINDER GAS, DIV. CHEMETRON CORP. | | | PWRC |
| 1502 | NCYX | NATIONAL CYLINDER GAS | | | SCAC3 |
| 1503 | NCZK | NICOLOZAKES TRANSPORTATION COMPANY | | | SCAC3 |
| 1504 | NCZL | NEW CHAIN LOGISTICS CO L | | | SCAC4 |
| 1505 | ND | Airlink Limited | IATA Prefix: 159, Established in 1989 and started scheduled operations in June 1990. Ceased operations on 27 July 2007. | PNG | AVCODES |
| 1506 | ND | Airline (PTY) Ltd. | | AUS | AVCODES |
| 1507 | ND | Inter-Canadian | ICAO: ICN, Designator ND recalled by IATA | CDN | AVCODES |
| 1508 | ND | Sky Wings Airlines S.A. | ICAO: GSW, Callsign: Arrow Jet, Founded in 2004. Merged with the Ukrainian airline Khors Aircompany on 1 December 2012. | GR | AVCODES |
| 1509 | ND | Nordair Ltd. | ICAO: NDR, Callsign: Nordair, | CDN | AVCODES |
| 1510 | ND | FMI Air Ltd. | ICAO: FMI, Callsign: Gecko, ICAO callsign changed from First Myanmar. | MYA | AVCODES |
| 1511 | ND | Nordic Aviation Group AS d/b/a Nordica | ICAO: NDA, Callsign: Nordica Air, All flights operated under LOT Polsih Airlines AOC (LO/LOT) w.e.f. 19 November 2016. Established by Nordic Aviation Group on 25 September 2015 as Nordic Aviation Group. | EST | AVCODES |
| 1512 | NDA | Northern Airways | Callsign: Northern Dakota, | USA | AVCODES |
| 1513 | NDA | Nordic Aviation Group AS d/b/a Nordica | IATA: ND, Callsign: Nordica Air, All flights operated under LOT Polsih Airlines AOC (LO/LOT) w.e.f. 19 November 2016. Established by Nordic Aviation Group on 25 September 2015 as Nordic Aviation Group. | EST | AVCODES |
| 1514 | NDA | Northern Airways | | | ICAO1 |
| 1515 | NDAL | NADEAU, ALFRED L | | | SCAC4 |
| 1516 | NDAM | NORDIC AMERICAN SHIPPING INC. | | | SCAC3 |
| 1517 | NDAM | NORDIC AMERICAN SHIPPING INC. | | | SCAC4 |
| 1518 | NDAR | NEED-A-RIDE TRANSPORTATION CO | | | SCAC3 |
| 1519 | NDAR | NORTH DAKOTA MUSEUM OF ART | | | SCAC4 |
| 1520 | NDAU | INTERNATIONAL NUCLEAR SERVICES LTD | | GB | BIC |
| 1521 | NDAU | INTERNATIONAL NUCLEAR SERVICES LTD | | | SCAC4 |
| 1522 | NDAX | Ouachita Fertilizer & Grain Co. | added 1/1962; 7/1965; eliminated 10/1965 | | NAKINA |
| 1523 | NDAX | Ouachita Fertilizer & Grain Co. | added 1/62; 7/65; eliminated 10/65 | | NRHS |
| 1524 | NDAX | OUACHITA FERTILIZER & GRAIN CO. | | | PWRC |
| 1525 | NDAY | NEW STANDARD AG INC | | | SCAC4 |
| 1526 | NDBI | NORTHERN DRY-BULK INC | | | SCAC4 |
| 1527 | NDBS | NADA BUS INC | | | SCAC3 |
| 1528 | NDBT | N D B TRUCKING LTD | | | SCAC4 |
| 1529 | NDC | Nordic East Airlink AB | IATA: 7I, Callsign: Nordic, IATA designator changed to LF w.e.f. 30 December 2002. Designator changed from 9R* | S | AVCODES |
| 1530 | NDC | Nordic East Airlink AB | IATA: 9R, Callsign: Nordic, Designator changed to 7I | S | AVCODES |
| 1531 | NDC | Nordic East Airlink AB | IATA: LF, Callsign: Nordic, Name changed to Nordic Airlink Holding AB dba FlyNordic. Designator changed from 9R*. IATA designator changed from 7I w.e.f. 30 December 2002. | S | AVCODES |
| 1532 | NDC | Nordic Airlink Holding AB dba FlyNordic | IATA: LF, Callsign: Nordic, Purchased by and merged in Norwegian Air Shuttle. Name changed from Nordic East Airlink AB. Designator changed from 9R*. IATA designator changed from 7I w.e.f. 30 December 2002. | S | AVCODES |
| 1533 | NDC | FlyNordic | IATA: LF | | ICAO1 |
| 1534 | NDCE | NORDIC ENTERPRISES INC | | | SCAC3 |
| 1535 | NDCE | NORDIC ENTERPRISES INC | | | SCAC4 |
| 1536 | NDCF | N D C FREIGHT INC | | | SCAC3 |
| 1537 | NDCH | NEEDHAMS MARINE LIMITED | | | SCAC4 |
| 1538 | NDCI | NATIONAL DISTRIBUTING CO INC | | | SCAC3 |
| 1539 | NDCL | NADCLOGISTICS INC | | | SCAC4 |
| 1540 | NDCN | NATIONAL DISTRIBUTING CO INC | | | SCAC4 |
| 1541 | NDCO | NATIONWIDE DISTRIBUTORS INC | | | SCAC3 |
| 1542 | NDCO | NADO INC | | | SCAC4 |
| 1543 | NDCR | N.D.C. R.R. Co. | 1/1994-7/2005 | | NAKINA |
| 1544 | NDCR | N.D.C. R.R. Co. | 1/94-7/2000 | | NRHS |
| 1545 | NDCR | N.D.C. RAILROAD CO. | | | PWRC |
| 1546 | NDCR | NDC Railroad | | | RSRV |
| 1547 | NDCR | N D C RAILROAD COMPANY | | | SCAC3 |
| 1548 | NDCR | Northampton Development Center Railroad | | USA | TRAFFIC |
| 1549 | NDCS | NDC COMMUNICATIONS LLC | | | SCAC4 |
| 1550 | NDCU | NIDEC | | F | BIC |
| 1551 | NDCW | NDC INC (NATIONAL DISTRIBUTION CENT | | | SCAC4 |
| 1552 | NDCX | NICKEL & DIME RAILWAY COMPANY, INC. | | | PWRC |
| 1553 | NDD | Nordend S.r.l. | Callsign: Nordend, | I | AVCODES |
| 1554 | NDDD | NORIEGA DEWITT, DAVID RUBEN | | | SCAC4 |
| 1555 | NDDS | NORDLING, DENNIS GRAIN | | | SCAC4 |
| 1556 | NDDX | National Dairy Despatch | 7/1930-7/1932 | | NAKINA |
| 1557 | NDDX | National Dairy Despatch, Inc. | 7/1935 | | NAKINA |
| 1558 | NDDX | NATIONAL DAIRY DESPATCH | | | PWRC |
| 1559 | NDED | NIEBLAS DELFIN, EDGARDO | | | SCAC4 |
| 1560 | NDEL | NEWDEL EXPRESS CO INC | | | SCAC4 |
| 1561 | NDEM | FERROCARRILES NACIONALES DE MEXICO | | | PWRC |
| 1562 | NDEM | Ferrocarriles Nacionales de México | | | RSRV |
| 1563 | NDEM | Ferrocarriles Nacionales de Mexico | | MEX | TRAFFIC |
| 1564 | NDEP | NAVIERA DEL PACIFICO SA MEXICO | | | SCAC3 |
| 1565 | NDEP | NAVIERA DEL PACIFICO SA | | | SCAC4 |
| 1566 | NDEQ | NEW DIRECTION EQUIPMENT CO | | | SCAC4 |
| 1567 | NDEY | NOBLE DELIVERY | | | SCAC4 |
| 1568 | NDF | Namibian Defence Force | Callsign: Namibian Airforce, | NAM | AVCODES |
| 1569 | NDF | Namibian Defence Force | | | ICAO1 |
| 1570 | NDFE | NEWMANS DISCOUNT FUEL | | | SCAC4 |
| 1571 | NDFM | NEUFELD FARMS HARVESTING INC | | | SCAC4 |
| 1572 | NDGI | NICKELL, D | | | SCAC4 |
| 1573 | NDHA | NEUFELD, JOHAN & JACOB | | | SCAC4 |
| 1574 | NDI | KS Nordic Air | | DK | AVCODES |
| 1575 | NDIA | NIDIA SHIPPING CORPORATION | | | SCAC3 |
| 1576 | NDIC | NOMADIC INTERNATIONAL A/S | | | SCAC3 |
| 1577 | NDIC | NORDIC LOGISTICS LLC | | | SCAC4 |
| 1578 | NDIG | NAVIGATOR DIRECT INC | | | SCAC4 |
| 1579 | NDIN | NATIONAL DISTRIBUTORS INC | | | SCAC3 |
| 1580 | NDIN | NATIONAL DISTRIBUTORS INC | | | SCAC4 |
| 1581 | NDIR | NEW DIRECTION SHIPPING CO/., LTD. | | | SCAC3 |
| 1582 | NDIS | NATIONWIDE DISTRIBUTORS INC | | | SCAC4 |
| 1583 | NDIT | NATIONS DIRECT | | | SCAC4 |
| 1584 | NDIX | Merchants Despatch Transportation Corp. | added 7/1956; 10/1957; eliminated 7/1960; 4/1961 (not listed) | | NAKINA |
| 1585 | NDIX | Merchants Despatch Transportation Corp. | added 7/56; 10/57; eliminated 7/60; 4/61 | | NRHS |
| 1586 | NDIX | MERCHANTS DESPATCH TRANSPORTATION CORP. | | | PWRC |
| 1587 | NDJ | Maiba Airways | Callsign: Bassamat, | TCH | AVCODES |
| 1588 | NDJL | NELSON, D J LTD | | | SCAC3 |
| 1589 | NDKB | NICK & DEES TRUCKING & BROKERAGE IN | | | SCAC4 |
| 1590 | NDKQ | NORTH DEKAB TRANSFER CO | | | SCAC3 |
| 1591 | NDL | Chrono Aviation Inc. d/b/a Chrono Aviation | Callsign: Needle, | CDN | AVCODES |
| 1592 | NDLA | NIAGARA DRIVE LTD | | | SCAC4 |
| 1593 | NDLC | N D LEASING CO | | | SCAC3 |
| 1594 | NDLC | NORTH DELTA COPTERS LTD | | | SCAC4 |
| 1595 | NDLD | NORTHLAND DEDICATED LLC | | | SCAC4 |
| 1596 | NDLI | NATIONAL DELIVERY SERVICE INC | | | SCAC3 |
| 1597 | NDLL | NORTHSHORE DRAYAGE LLC | | | SCAC4 |
| 1598 | NDLO | NEW DEAL LOGISTICS | | | SCAC4 |
| 1599 | NDLO | Norwegian Defence Logistics Organisation | | NO | VKM |
| 1600 | NDLP | NDL TRANSPORT INC | | | SCAC3 |
