| 1 | HE | LGW-Luftfahrtgesellschaft Walter GmbH | ICAO: LGW, Callsign: Walter, Filed for insolvency on 22 April 2020. | D | AVCODES |
| 2 | HE | Hollis & Eastern R.R. Co. | 1/1975-7/2005 | | NAKINA |
| 3 | HE | Hartford Eastern Ry. | 7/1923-7/1932 | | NAKINA |
| 4 | HE | Hollis & Eastern R.R. Co. | 1/75-7/2000 | | NRHS |
| 5 | HE | Historische Eisenbahn e.V. | Frankfurt | D | privat-bahn.de |
| 6 | HE | *HARTFORD EASTERN RWY. | | | PWRC |
| 7 | HE | +HOLLIS & EASTERN RAILROAD | | | PWRC |
| 8 | HE | Hollis and Eastern Railroad | | | RSRV |
| 9 | HE | HOLLIS & EASTERN R R CO | | | SCAC4 |
| 10 | HE | Hollis & Eastern R.R. Co. | | USA | TRAFFIC |
| 11 | HE | Hugo Ehlers GmbH & Co Kg | | DE | VKM |
| 12 | HEA | Heliavia-Transporte Aereo, Lda | Callsign: Heliavia, | P | AVCODES |
| 13 | HEA | The Hawaii Express | IATA: LP, Ceased operations | USA | AVCODES |
| 14 | HEA | Heliavia-Transporte Aereo | | | ICAO1 |
| 15 | HEAA | HEART TRANSPORTATION | | | SCAC4 |
| 16 | HEAB | HEADRUSH | | | SCAC4 |
| 17 | HEAC | HEGGELUND, DANNIE | | | SCAC4 |
| 18 | HEAD | HEAD LINES (MCLEAN KENNEDY LTD) | | | PWRC |
| 19 | HEAD | HUBTRUCKER | | | SCAC4 |
| 20 | HEAG | Hessische Elektrizitäts AG | City: Darmstadt | D | TRAFFIC |
| 21 | HEAGB | HEAG mobiBus | | D | TRAFFIC |
| 22 | HEAH | HARIBON EXPRESS LLC | | | SCAC4 |
| 23 | HEAI | HISTORICAL EQUIPMENT ASSOCIATION | | | PWRC |
| 24 | HEAO | HEARN, DON & SONS INC | | | SCAC4 |
| 25 | HEAP | HERNANDEZ, SAM TRUCKING | | | SCAC4 |
| 26 | HEAQ | HEATH OIL CO INC | | | SCAC4 |
| 27 | HEAR | HEART TRANSPORTATION U S INC | | | SCAC4 |
| 28 | HEAX | Huntsman Ethyleneamines, Ltd. | added 4/2003; 7/2005 | | NAKINA |
| 29 | HEAX | HUNTSMAN ETHYLENEAMINES, LTD. | | | PWRC |
| 30 | HEAX | HUNTSMAN ETHYLENEAMINES LTD | | | SCAC4 |
| 31 | HEAY | HEALDTON OIL CO INC | | | SCAC4 |
| 32 | HEB | Heli Bernina AG | Callsign: Helibernina, | CH | AVCODES |
| 33 | HEB | FaeroeCopter | Ceased operations | FR | AVCODES |
| 34 | HEB | Heli Bernina | | | ICAO1 |
| 35 | HEB | HLB Hessenbahn GmbH | | DE | VKM |
| 36 | HEBBEL | Hebbel Busbetrieb GmbH | City: Leverkusen | D | TRAFFIC |
| 37 | HEBC | HEPLER TRANSPORT INC | | | SCAC4 |
| 38 | HEBG | HERON SHIPPING LLC | | | SCAC4 |
| 39 | HEBI | HEINS ENTERPRISES LLC | | | SCAC4 |
| 40 | HEBM | HEBDEN & MCKENZIE TRANSPORT INC | | | SCAC4 |
| 41 | HEBR | HEBERT, JOHN J DISTRIBUTOR INC | | | SCAC4 |
| 42 | HEBX | H.E. Boner | 7/1923 | | NAKINA |
| 43 | HEBX | H.E. BONER | | | PWRC |
| 44 | HEC | Heliservicio Campeche, S.A. de C.V. | Callsign: Helicampeche, | MEX | AVCODES |
| 45 | HEC | Helicopter Corporation of India | | IND | AVCODES |
| 46 | HEC | Heliservicio Campeche | | | ICAO1 |
| 47 | HEC | Heathrow Connect | Heathrow Connect is a train service in London, connecting Heathrow Airport with Paddington station. It is a joint venture between First Great Western and BAA. The service follows the same route as the faster Heathrow Express service but serves intermediate stations on its route, thus connecting several locations in west London with each other, the airport, and central London. | GB | TRAFFIC |
| 48 | HECC | HEPSON EQUIPMENT INC | | | SCAC4 |
| 49 | HECD | HATT ENTERPRISES (2010) LTD | | | SCAC4 |
| 50 | HECE | HUMBLE EQUIPMENT CO INC | | | SCAC4 |
| 51 | HECG | HORIZON LINES OF GUAM LLC | | | SCAC4 |
| 52 | HECL | HATTENHAUER ENERGY CO LLC | | | SCAC4 |
| 53 | HECM | HECATHORN, MARGRET | | | SCAC1 |
| 54 | HECM | HECATHORN, MARGARET | | | SCAC4 |
| 55 | HECN | HELLS CANYON NAVIGATION | | | SCAC4 |
| 56 | HECQ | HOLLERBACH EQUIPMENT CO INC | | | SCAC4 |
| 57 | HECR | HECTS TRUCKS LLC | | | SCAC4 |
| 58 | HECT | Hector Rail AB | Real: HCTOR, 2004 - | S | TRAFFIC |
| 59 | HECW | HENDERSON, C W (TRAILER LOAD SERVIC | | | SCAC4 |
| 60 | HECX | Hoosier Energy REC, Inc. | added 10/1981; 1/1994-7/2005; eliminated 4/2009 | | NAKINA |
| 61 | HECX | H.E. Clark | 7/1923-7/1935 | | NAKINA |
| 62 | HECX | Hoosier Energy REC, Inc. | added 10/81; 1/94-7/2000 | | NRHS |
| 63 | HECX | *H.E. CLARK | | | PWRC |
| 64 | HECX | +HOOSIER ENERGY REC, INC. | | | PWRC |
| 65 | HECX | Hoosier Energy REC | | | RSRV |
| 66 | HECX | HOOSIER ENERGY REC, INC. | | | SCAC4 |
| 67 | HECY | HECNY TRANSPORTATION INC | | | SCAC4 |
| 68 | HED | Heritage Aviation Developments Ltd. | Callsign: Flapjack, | GB | AVCODES |
| 69 | HED | Herritage Aviation Developments | | | ICAO1 |
| 70 | HEDC | HOUSTON EXPRESS DELIVERY SERVICE | | | SCAC4 |
| 71 | HEDF | HEDREN FARMS INC | | | SCAC4 |
| 72 | HEDH | HEIDENREICH TRUCKING COMPANY | | | SCAC4 |
| 73 | HEDM | HENDRICK MOVING AND STORAGE INC | | | SCAC4 |
| 74 | HEDN | HENDERSON, EARL L | | | SCAC1 |
| 75 | HEDN | HENDERSON, EARL L TRUCKING | | | SCAC4 |
| 76 | HEDO | HEART OF DIXIE INC | | | SCAC4 |
| 77 | HEE | Heli Europe | Callsign: Heli-Europe, | B | AVCODES |
| 78 | HEE | Heliejecutivo, S.A. de C.V. | Callsign: Heliejecutivo, | MEX | AVCODES |
| 79 | HEEQ | H & E EQUIPMENT SERVICES MIDATLANTI | | | SCAC4 |
| 80 | HEER | HEEREN TRUCKING COMPANY INC | | | SCAC4 |
| 81 | HEEV | H & E EQUIPMENT SERVICES INC | | | SCAC4 |
| 82 | HEEX | HarzElbeExpress | Real: HEX | D | TRAFFIC |
| 83 | HEF | Hammer Eisenbahnfreunde e.V. | Hamm | D | privat-bahn.de |
| 84 | HEF | Historiche Eisenbahn Frankfurt e.V | | DE | VKM |
| 85 | HEFJ | HELFRICH, JOHN, TRUCKING | | | SCAC1 |
| 86 | HEG | J.J. Gradin Aviacion | | E | AVCODES |
| 87 | HEG | Hersfelder Eisenbahn Gesellschaft mbH | Bad Hersfeld | D | privat-bahn.de |
| 88 | HEG | Hamburger Eisenbahngesellschaft mbH | Hamburg | D | privat-bahn.de |
| 89 | HEG | Hersfelder Eisenbahn Gesellschaft mbH | | D | TRAFFIC |
| 90 | HEG | Historische Eisenbahn Gesellschaft | | CH | VKM |
| 91 | HEGR | HEGAR LOGISTICS SA DE CV | | | SCAC4 |
| 92 | HEGY | Hegyközi kisvasút | | H | TRAFFIC |
| 93 | HEH | Helitrans AG | | CH | AVCODES |
| 94 | HEHC | HENDERSON, C W (DIV OF CWH | | | SCAC4 |
| 95 | HEHT | HENNIS FREIGHT LINES INC | | | PWRC |
| 96 | HEI | Ricardo Hein B (Aerohein Ltda.) | Callsign: Aerohein, | RCH | AVCODES |
| 97 | HEI | Aerohein | | | ICAO1 |
| 98 | HEI | Heisei Chikuho Railway (Heichiku) | | J | TRAFFIC |
| 99 | HEIB | HEMI EXPRESS INC | | | SCAC4 |
| 100 | HEIC | HANKYU HANSHIN EXPRESS CO LTD | | | SCAC4 |
