| 1501 | HEQS | HORIZON EQUIPMENT SERVICES INC | | | SCAC4 |
| 1502 | HEQX | HELM Financial Corp. | 7/2000-7/2005 | | NAKINA |
| 1503 | HEQX | Helm Equipment Leasing Corp. | added 7/1993; 1/1994; eliminated 10/1994 | | NAKINA |
| 1504 | HEQX | Helm Equipment Leasing Corp. | added 7/93; 1/94; eliminated 10/94 | | NRHS |
| 1505 | HEQX | HELM Financial Corp. | Jul-00 | | NRHS |
| 1506 | HEQX | HELM EQUIPMENT LEASING CORPORATION (HELM FINANCIAL CORP.) | | | PWRC |
| 1507 | HEQX | Helm Financial Corporation | | | RSRV |
| 1508 | HEQX | HELM FINANCIAL CORPORATION | | | SCAC4 |
| 1509 | HER | Hex'Air | IATA: UD, Callsign: Hex Airline, Merged with Twin Jet during January 2017. | F | AVCODES |
| 1510 | HER | Hera Flight | Callsign: Hera, | USA | AVCODES |
| 1511 | HERA | HERONS SA DE CV | | | SCAC4 |
| 1512 | HERA | Compagnie des chemins de fer d’intérêt local du département de l’Hérault | | PF | TRAFFIC |
| 1513 | HERB | HERRINGTON, M C DISTRIBUTORS INC | | | SCAC4 |
| 1514 | HERD | HICKMANS EGG RANCH INC | | | SCAC4 |
| 1515 | HERE | HEREDIA TRUCKING COMPANY | | | SCAC4 |
| 1516 | HERF | Herforder Kleinbahn | | D | TRAFFIC |
| 1517 | HERG | H E R TRUCKING INC | | | SCAC4 |
| 1518 | HERI | HERITAGE DISTRIBUTION LLC | | | SCAC4 |
| 1519 | HERING | HERING Gleisbau | | D | TRAFFIC |
| 1520 | HERJ | HERRTWICH | | | SCAC4 |
| 1521 | HERK | HERRIN TRUCKING LLC | | | SCAC4 |
| 1522 | HERLI | Herlitschka Busreisen | | D | TRAFFIC |
| 1523 | HERMES | Hermes Groep NV | Owned by Connexxion | NL | TRAFFIC |
| 1524 | HERMS | Harmsdorf Reisen | | D | TRAFFIC |
| 1525 | HEROS | Helvetia Rolling Stock GmbH | | CH | TRAFFIC |
| 1526 | HEROS | HEROS Helvetia Rolling Stock GmbH | | CH | VKM |
| 1527 | HERR | HERRIN TRANSPORTATION CO | | | PWRC |
| 1528 | HERR | HERRERA, A TRANSPORT | | | SCAC4 |
| 1529 | HERS | HERMOR TRANSPORTES | | | SCAC4 |
| 1530 | HERTZ | | | USA | TRAFFIC |
| 1531 | HERU | HERC RENTALS | | USA | BIC |
| 1532 | HERX | General Electric Rail Services Corp. | added 1/2000; 7/2000-7/2005 | | NAKINA |
| 1533 | HERX | General Electric Railcar Services Corp. | added 1/1984; 1/1994; eliminated 1/2000 | | NAKINA |
| 1534 | HERX | North American Car Corp. | 1/1950-1/1980; eliminated 1/1984 | | NAKINA |
| 1535 | HERX | Hershey Chocolate Co. (North American Car Corp.) | 7/1932-7/1935 | | NAKINA |
| 1536 | HERX | North American Car Corp. | 1/52-1/80 | | NRHS |
| 1537 | HERX | General Electric Railcar Services Corp. | 1/94; eliminated 1/2000 | | NRHS |
| 1538 | HERX | General Electric Rail Services Corp. | added 1/2000; 7/2000 | | NRHS |
| 1539 | HERX | (NATX) GEN. ELECTRIC RAIL SERVICES CORP. (HERSHEY FOOD PROD.- LESSEE) {NORTH AMERICAN CAR CO.] | | | PWRC |
| 1540 | HERX | Hershey Foods (GE Rail Services Corporation) | | | RSRV |
| 1541 | HERX | GENERAL ELECTRIC RAILCAR SERVICES C | | | SCAC4 |
| 1542 | HERX | Hershey Chocolate Co. | | USA | TRAFFIC |
| 1543 | HES | Heli Services | | F | AVCODES |
| 1544 | HES | Harbour Air (Malta) Ltd | Callsign: Harbour Express, Ceased operations. sunsidary of Harbour Air Seaplanes, Canada. Founded in June 2007. | M | AVCODES |
| 1545 | HES | Holiday Europe Ltd. | IATA: 5Q, Callsign: Holiday Europe, IATA Designator changed to 5Q. | BG | AVCODES |
| 1546 | HES | Holiday Europe Ltd. | IATA: 5Q, Callsign: Holiday Europe, IATA Prefix: 062, IATA Designator changed from 5Q*. | BG | AVCODES |
| 1547 | HES | Hennigsdorfer Elektrostahlwerk GmbH | | D | TRAFFIC |
| 1548 | HESA | HERNANDEZ SOLORZANO, ANTONIO | | | SCAC4 |
| 1549 | HESB | HESTER BROKERS INC | | | SCAC4 |
| 1550 | HESE | H E S EXPRESS INC | | | SCAC4 |
| 1551 | HESF | Hammer Eisenbahnfreunde e. V. + Museumseisenbahn Hamm e. V | | D | TRAFFIC |
| 1552 | HESJ | HINE ENVIRONMENTAL SERVICES LLC | | | SCAC4 |
| 1553 | HESK | HESTER TRUCKING INC | | | SCAC4 |
| 1554 | HESO | HATCH ESSENTIAL OIL CO | | | SCAC4 |
| 1555 | HESP | HELIX ENERGY SOLUTIONS GROUP INC | | | SCAC4 |
| 1556 | HESR | Huron and Eastern Ry. Co. | added 7/1986; eliminated 7/1991 | | NAKINA |
| 1557 | HESR | Huron and Eastern Ry. Co., Inc. | added 7/1991; 1/1994-7/2005 | | NAKINA |
| 1558 | HESR | Huron and Eastern Ry. Co. | added 7/86; eliminated 7/91 | | NRHS |
| 1559 | HESR | Huron and Eastern Ry. Co., Inc. | added 7/91; 1/94-7/2000 | | NRHS |
| 1560 | HESR | HURON & EASTERN RAILWAY CO | | | PWRC |
| 1561 | HESR | Huron and Eastern Railway | | | RSRV |
| 1562 | HESR | HURON AND EASTERN RAILWAY COMPANY I | | | SCAC4 |
| 1563 | HESS | Carrosserie HESS AG | | CH | TRAFFIC |
| 1564 | HEST | HESS TRUCKING CO | | | SCAC4 |
| 1565 | HESU | HUTCHINSON EQUIPMENT SERVICES | | USA | BIC |
| 1566 | HESU | HERITAGE ENVIRONMENTAL SERVICES, INC. | | | PWRC |
| 1567 | HESU | Heritage Environmental Services | | | RSRV |
| 1568 | HESX | Heritage Environmental Services, Inc. c/o Heritage Group | 1/1994 (not listed); added 1/1997; 7/2000-7/2005; eliminated 7/2007 | | NAKINA |
| 1569 | HESX | Heritage Environmental Services, Inc. | 1/94; added 1/97 | | NRHS |
| 1570 | HESX | Heritage Environmental Services, Inc. c/o Heritage Group | Jul-00 | | NRHS |
| 1571 | HESX | HERITAGE ENVIRONMENTAL SERVICES, INC. | | | PWRC |
| 1572 | HESX | Heritage Environmental Services | | | RSRV |
| 1573 | HESX | HERITAGE ENVIRONMENTAL SERVICES LLC | | | SCAC4 |
| 1574 | HESZ | *HERITAGE ENVIRONMENTAL SERVICES, INC | | | PWRC |
| 1575 | HESZ | *HESKETT #1 | | | PWRC |
| 1576 | HESZ | Heritage Environmental Services | | | RSRV |
| 1577 | HESZ | HERITAGE ENVIRONMENTAL SERVICES, IN | | | SCAC4 |
| 1578 | HET | TAF Helicopters, S.A. | Callsign: Helitaf, Name changed to Habock Aviation, S.L.U. | E | AVCODES |
| 1579 | HET | Helitac Air Couriers | Callsign: Helitac, | USA | AVCODES |
| 1580 | HET | Habock Aviation, S.L.U. | Callsign: Helitaf, Name changed from TAF Helicopters, S.A. | E | AVCODES |
| 1581 | HET | TAF Helicopters | | | ICAO1 |
| 1582 | HETB | HEAVY EQUIPMENT TRANSPORT LLC | | | SCAC4 |
| 1583 | HETC | HERRIOTT TRUCKING CO INC | | | PWRC |
| 1584 | HETC | H E TRUCKING LTD | | | SCAC4 |
| 1585 | HETJ | HEASLET EQUIPMENT & TRUCKING LTD | | | SCAC4 |
| 1586 | HETN | HARDY ENTERPRISES TRANSPORTATION IN | | | SCAC4 |
| 1587 | HETP | HET ENTERPRISES INC | | | SCAC4 |
| 1588 | HETQ | H & E TRUCKING | | | SCAC4 |
| 1589 | HETS | HENNINGSEN TRANSPORTATION SERVICES | | | SCAC4 |
| 1590 | HETT | HEATHS & HEATHERS | | | SCAC4 |
| 1591 | HETU | DEXTRAMAR | | | SCAC4 |
| 1592 | HETY | HAMILTON EXPRESS TRANSPORTATION | | | SCAC4 |
| 1593 | HEV | Helicopteros Ejecutivos, S.A. de C.V. | Callsign: Helijecutivo, | MEX | AVCODES |
| 1594 | HEV | Verein zur Förderung des Eisenbahnmuseums Vienenburg e.V. | | DE | VKM |
| 1595 | HEVC | HEVETIA CONTAINER LINE | | | SCAC4 |
| 1596 | HEVR | HERNANDEZ CASTRO, EVERARDO | | | SCAC4 |
| 1597 | HEW | ASA Heli-Water Sp. z.o.o. | Callsign: Heliwater, | PL | AVCODES |
| 1598 | HEWG | HEWINGS TRANSPORTATION INC | | | SCAC4 |
| 1599 | HEWH | HOWERTON, E W HAULING INC | | | SCAC4 |
| 1600 | HEWS | HEWSAW MACHINES INC | | | SCAC4 |
