| 1 | HI | Papillon Airways, Inc. | IATA accounting code 563 recalled. | USA | AVCODES |
| 2 | HI | Hong Kong Air International Ltd. | Callsign: Coptair, | HK | AVCODES |
| 3 | HI | Hispania Lineas Aereas, S.L. | ICAO: HSL, Callsign: Hotel India, IATA designator changed to XF. | E | AVCODES |
| 4 | HI | Holton Inter-Urban Ry. Co. | 8/1920-10/1966 & 1/1975-1/1980; eliminated 4/1986 | | NAKINA |
| 5 | HI | Holton Inter-Urban Ry. Co. | 4/38-10/66 & 1/75-1/80; eliminated 4/86 | | NRHS |
| 6 | HI | HOLTON INTERURBAN RY | | | PWRC |
| 7 | HI | Holton Interurban Railway | | | RSRV |
| 8 | HI | Hammersley Iron | | AUS | TRAFFIC |
| 9 | HIA | Canadian Eagle Aviation Ltd. | Callsign: Haida, | CDN | AVCODES |
| 10 | HIA | Haskin Aviation, LLC | | USA | AVCODES |
| 11 | HIA | Canadian Eagle Aviation | | | ICAO1 |
| 12 | HIAC | HAULCO INC | | | SCAC4 |
| 13 | HIAR | HAWAII AIR CARGO INC | | | SCAC4 |
| 14 | HIAV | Hispano Aviación | | E | TRAFFIC |
| 15 | HIB | Helibravo Aviacao. Lda. | Callsign: Helibravo, | P | AVCODES |
| 16 | HIB | Helibravo Aviacao | | | ICAO1 |
| 17 | HIBB | HILL, W W INC | | | SCAC4 |
| 18 | HIBT | HIBA TRANSPORT | | | SCAC4 |
| 19 | HIBU | HOYER GMBH | | D | BIC |
| 20 | HIC | Helicopteros Insulares, S.L. | | E | AVCODES |
| 21 | HIC | THE HIGH IRON CO.INC. | | | PWRC |
| 22 | HICA | HI C TRANSPORTATION | | | SCAC4 |
| 23 | HICC | HIGH TRACK LLC | | | SCAC4 |
| 24 | HICI | HIGH POINT EQUIPMENT LTD | | | SCAC4 |
| 25 | HICL | HARRINGTON TRUCKING | | | SCAC4 |
| 26 | HICN | HIE HOLDINGS INC | | | SCAC4 |
| 27 | HICT | HI C TRANSPORTATION INC | | | SCAC4 |
| 28 | HICU | HAESAERTS INTERMODAL NV | | B | BIC |
| 29 | HICU | HAESAERTS INTERMODAL NV | | | SCAC4 |
| 30 | HICV | HORIZON INTERNATIONAL CARGO INC | | | SCAC4 |
| 31 | HICX | HUNTSVILLE INTERNATIONAL INTERMODAL CENTER | | | PWRC |
| 32 | HICX | Huntsville International Intermodal Center | | USA | TRAFFIC |
| 33 | HID | Aviacion Ejecutiva de Hildago, S.A. de C.V. | Callsign: Ejecutiva Hidalgo, | MEX | AVCODES |
| 34 | HID | Aviacion Ejecutiva De Hildago | | | ICAO1 |
| 35 | HIDI | HI-DICE TRUCKING | | | SCAC4 |
| 36 | HIDN | HIDDEN VALLEY TRANSFER INC | | | SCAC4 |
| 37 | HIDQ | HI-DESERT MOVING & STG | | | SCAC4 |
| 38 | HIDS | HI-DESERT TRANSFER & STORAGE | | | SCAC4 |
| 39 | HIDT | HEITER TRUCK LINE INC | | | SCAC4 |
| 40 | HIDX | Merchants Despatch Transportation Corp. | 1/1941-1/1943 | | NAKINA |
| 41 | HIDX | MERCHANTS DESPATCH TRANSPORTATION CORP. | | | PWRC |
| 42 | HIEC | HIEB TRANS LOGISTICS LLC | | | SCAC4 |
| 43 | HIEL | HIELO Y REFRIGERACION FRONTERIZA SA | | | SCAC4 |
| 44 | HIEM | HIBMA TRUCKING | | | SCAC4 |
| 45 | HIEP | HOUSTON INTERMODAL EXPRESS LLC | | | SCAC4 |
| 46 | HIER | HILLIER TRUCKING | | | SCAC4 |
| 47 | HIES | HIERS, J CO INC | | | SCAC4 |
| 48 | HIET | HIEL TRUCKING INC | | | SCAC4 |
| 49 | HIF | Heli-Iberica Fotogrametria S.L. | Callsign: Hifsa, | E | AVCODES |
| 50 | HIF | Heli-Iberica Fotogrametria | | | ICAO1 |
| 51 | HIFER | HIFER CONSTRUCCION, CONSERVACION Y SERVICIOS, S.A. | | ES | VKM |
| 52 | HIFI | HELLMANN WORLDWIDE LOGISTICS INC | | | SCAC4 |
| 53 | HIG | Heli-inter Guyane | Callsign: Inter Guyane, | GUY | AVCODES |
| 54 | HIG | Heli-Inter Guyane | | | ICAO1 |
| 55 | HIGG | HIGG TRUCKING INC | | | SCAC4 |
| 56 | HIGH | HIGHLAND TRANSPORTATION INC | | | SCAC4 |
| 57 | HIGK | HIDALGOS TRUCKING | | | SCAC4 |
| 58 | HIGO | HI-GRADE OIL CO INC | | | SCAC4 |
| 59 | HIGR | HIGH-TECH AGRO LTD | | | SCAC4 |
| 60 | HIGS | HERMILA INES, GARCIA BENAVIDES | | | SCAC4 |
| 61 | HIGY | HIGHWAY FREIGHT SYSTEMS INC | | | SCAC4 |
| 62 | HIHN | HIGH LINK LINE INC | | | SCAC4 |
| 63 | HIHO | HITCH HOUSE, THE | | | SCAC4 |
| 64 | HIHP | HIGH HOPES TRANSPORTATION INC | | | SCAC4 |
| 65 | HIHR | HRCP II HAMPTON ROADS CHASSIS POOL | | | SCAC4 |
| 66 | HIHT | HIGH TECHNOLOGY LOGISTICS | | | SCAC1 |
| 67 | HIIA | HTS INTERNATIONAL INC | | | SCAC4 |
| 68 | HIIN | HARMON INTERNATIONAL INDUSTRIES INC | | | SCAC4 |
| 69 | HIIT | HAWAII INTERMODAL TANK TRANSPORT | | | SCAC4 |
| 70 | HIIX | TTX Co., Hamburg Division | added 1/1992; 1/1994; eliminated 7/1996; 7/2000-7/2005 (not listed) | | NAKINA |
| 71 | HIIX | Trailer Train Co., Hamburg Division | added 7/1984; eliminated 1/1992 | | NAKINA |
| 72 | HIIX | Hamburg Industries, a Division of Trailer Train Co. | added 4/1984; eliminated 7/1984 | | NAKINA |
| 73 | HIIX | Hamburg Industries, Inc. | added 4/1976; 1/1980; eliminated 4/1984 | | NAKINA |
| 74 | HIIX | Hamburg Industries, Inc. | added 4/76; 1/80; eliminated 4/84 | | NRHS |
| 75 | HIIX | Hamburg Industries, a Division of Trailer Train Co. | added 4/84; eliminated 7/84 | | NRHS |
| 76 | HIIX | Trailer Train Co., Hamburg Division | added 7/84; eliminated 1/92 | | NRHS |
| 77 | HIIX | TTX Co., Hamburg Division | added 1/92; 1/94; eliminated 7/96 | | NRHS |
| 78 | HIIX | TTX Co., Hamburg Division | Jul-00 | | NRHS |
| 79 | HIIX | TTX COMPANY - HAMBURG DIVISION | | | PWRC |
| 80 | HIIX | Hamburg Industries (TTX) | | | RSRV |
| 81 | HIIX | TTX COMPANY | | | SCAC4 |
| 82 | HIJ | Helitech Aeroservices, Inc. | Name changed to DHC Corporation | J | AVCODES |
| 83 | HIJ | DHC Corporation | Name changed from Helitech Aeroservices, Inc. | J | AVCODES |
| 84 | HIKH | HIKOH TRUCKING | | | SCAC4 |
| 85 | HIKS | HICKS TRUCKING INC | | | SCAC4 |
| 86 | HIKT | HICK TRUCKING COMPANY OF LITCHFIELD | | | SCAC4 |
| 87 | HIKW | HIRSCHE, KENNETH WILLIAM INC | | | SCAC4 |
| 88 | HIL | Skyways Regional AB | IATA: HS, Callsign: Highland, Name changed to Svenska Direcktflyg AB. Name changed from Highland Air AB | S | AVCODES |
| 89 | HIL | Highland Air AB | IATA: HS, Callsign: Highland, Name changed to Skyways Regional AB | S | AVCODES |
| 90 | HIL | Svenska Direktflyg AB | IATA: HS, Callsign: Highland, ICAO designator changed to SKH, ICAO callsign changed to Skyreg. Name changed from Skyways Regional AB | S | AVCODES |
| 91 | HILC | HILL TRANSPORT INC | | | SCAC4 |
| 92 | HILF | HILITE SEAFOOD | | | SCAC4 |
| 93 | HILH | HORIZON INT'L SHIPPING INC | | | SCAC4 |
| 94 | HILI | HI-LINE TRANSFER AND STORAGE INCORP | | | SCAC4 |
| 95 | HILJ | HILL, JAMES P INC | | | SCAC4 |
| 96 | HILLSIDE | 22 Hillside | | USA | TRAFFIC |
| 97 | HILM | HI-LITE MARKINGS INC | | | SCAC4 |
| 98 | HILN | HORIZON INTERNATIONAL LINES | | | SCAC4 |
| 99 | HILP | HILLTOP OIL COMPANY INC | | | SCAC4 |
| 100 | HILS | HILL TRANSPORTATION CO | | | PWRC |
