| 1 | HA | Hawaiian Airlines | ICAO: HAL, Callsign: Hawaiian, IATA Prefix: 173, | USA | AVCODES |
| 2 | HA | Al-Haya Aviation | ICAO: HYA, Callsign: Alhaya, IATA Prefix: 164, | IRQ | AVCODES |
| 3 | HA | Hjørring - Ålbæk | 1925 | DK | jernbanen.dk |
| 4 | HA | Nan Demo Hashiru | | | TRAFFIC |
| 5 | HAA | Helicopteros Agroforestal Ltda | Callsign: Agroforestal, | RCH | AVCODES |
| 6 | HAA | Harrison Air | Callsign: Harrison, | CDN | AVCODES |
| 7 | HAA | Helicopteros Agroforestal | | | ICAO1 |
| 8 | HAAA | HARI STONES LIMITED | | | SCAC4 |
| 9 | HAAB | HAAB, F C COMPANY INC | | | SCAC4 |
| 10 | HAAF | HALL AND SMITH ENERGY | | | SCAC4 |
| 11 | HAAG | HAAG FOODS & POULTRY INC | | | SCAC4 |
| 12 | HAAG | Haagse Tramweg Maatschappij | Real: HTM, City: Den Haag | NL | TRAFFIC |
| 13 | HAAO | HARE, J H & ASSOCIATES LTD | | | SCAC4 |
| 14 | HAARGAZ | Haargaz Group | | IL | TRAFFIC |
| 15 | HAAU | SAMAT INTERNATIONAL AB | | S | BIC |
| 16 | HAAU | ADR-HAANPAA OY | | | SCAC4 |
| 17 | HAAW | HANSON, GREG TRUCKING | | | SCAC4 |
| 18 | HAB | Ashab, Joint-Stock Air Company | Callsign: Askhab, | RUS | AVCODES |
| 19 | HAB | AirSprint US, Inc. | Callsign: Fracjet, ICAO designator changed to FCJ. | USA | AVCODES |
| 20 | HABA | HAY HAULERS UNLIMITED | | | SCAC4 |
| 21 | HABA | Stadtwerke Osnabrück AG (Hafenbahn Osnabrück) | Real: SWO | D | TRAFFIC |
| 22 | HABB | HAB NAB TRUCKING INC | | | SCAC4 |
| 23 | HABC | HALL BROS. TRANSPORTATION CO | | | SCAC1 |
| 24 | HABE | HARDEBECK TRANSPORT INC | | | SCAC4 |
| 25 | HABG | HARROD TRUCKING | | | SCAC4 |
| 26 | HABM | HART, BRIAN ANIMAL EXCHANGE | | | SCAC4 |
| 27 | HABU | AMERICA-AFRICA-EUROPE LINE GMBH | | | SCAC3 |
| 28 | HABU | HARY GMBH | | | SCAC4 |
| 29 | HABX | Habco International Inc. | 1/1994-7/2005 (not listed) | | NAKINA |
| 30 | HABX | Habco, Inc. | added 1/1972; 1/1975-1/1980; eliminated 5/1983 | | NAKINA |
| 31 | HABX | Horne-Boatright Chemical Co., Inc. | added 4/1969; 4/1970; eliminated 1/1972 | | NAKINA |
| 32 | HABX | Hanlon-Buchanan, Inc. | 7/1935-1/1946 | | NAKINA |
| 33 | HABX | Hanlon-Buchanan, Inc. | Apr-38 | | NRHS |
| 34 | HABX | Horne-Boatright Chemical Co., Inc. | added 4/69; 4/70; eliminated 1/72 | | NRHS |
| 35 | HABX | Habco, Inc. | added 1/72; 1/75-1/80; eliminated 5/83 | | NRHS |
| 36 | HABX | Habco International Inc. | 1/94-7/2000 | | NRHS |
| 37 | HABX | *HANLON-BUCHANAN, INC. | | | PWRC |
| 38 | HABX | +HABCO INTERNATIONAL INC. [HORNE-BOATRIGHT CHEMICAL CO., INC.] | | | PWRC |
| 39 | HABX | Habco International | | | RSRV |
| 40 | HABX | HABCO INTERNATIONAL INC. | | | SCAC4 |
| 41 | HAC | Henebury Aviation Co. | | AUS | AVCODES |
| 42 | HAC | Henebury Aviation | | | ICAO1 |
| 43 | HAC | Hokkaido Air System | Real: NTH, 6L | J | TRAFFIC |
| 44 | HACA | HAINAULT LLC | | | SCAC4 |
| 45 | HACC | HAWK TRANSPORTATION INC | | | SCAC4 |
| 46 | HACD | HADLEY SEED FARM | | | SCAC4 |
| 47 | HACE | HAAG TRANSPORT INC | | | SCAC4 |
| 48 | HACH | HACHE EXPRESS INC | | | SCAC4 |
| 49 | HACK | HACK & SONS TRUCKING | | | SCAC4 |
| 50 | HACK | Hackney Community Transport | | GB | TRAFFIC |
| 51 | HACL | HARTWIG TRUCKING INC | | | SCAC4 |
| 52 | HACO | HALLCO TRANSPORT SYSTEMS INC | | | SCAC4 |
| 53 | HACR | H & A EXPRESS INC | | | SCAC4 |
| 54 | HACT | HAMMOND AIR CONDITIONING LTD | | | SCAC4 |
| 55 | HACU | HAIAN TRANSPORT & STEVEDORING JSC | | VN | BIC |
| 56 | HACU | CONTENEMAR SA | | | SCAC4 |
| 57 | HACV | HARRIS AIRCRAFT SERVICES INC | | | SCAC4 |
| 58 | HACX | Canada Packers Ltd. | eliminated 4/1971 | | NAKINA |
| 59 | HACX | Canada Packers Ltd. (The Harris Abbatoir Co., Ltd.) | 7/1935-4/1970 | | NAKINA |
| 60 | HACX | The Harris Abbatoir Co., Ltd. (Canada Packers Ltd.) | 7/1932 | | NAKINA |
| 61 | HACX | Canada Packers Ltd. (The Harris Abbatoir Co., Ltd.) | 4/38-4/70 | | NRHS |
| 62 | HACX | Canada Packers Ltd. | eliminated 4/71 | | NRHS |
| 63 | HACX | CANADA PACKERS LTD. [HARRIS ABBATOIR CO., LTD.] | | | PWRC |
| 64 | HAD | Haiti Aviation S.A. d/b/a Air D'Ayiti | IATA: H9, Callsign: Haiti Avia, Designator H9 reinstated by IATA | RH | AVCODES |
| 65 | HAD | Helicopteros Andes | Callsign: Heliandes, | RCH | AVCODES |
| 66 | HAD | Haiti Aviation S.A. | IATA: H5, | RH | AVCODES |
| 67 | HADB | HALO DISTRIBUTING COMPANY | | | SCAC4 |
| 68 | HADD | HALL, GEO A INC | | | SCAC4 |
| 69 | HADF | HARDEN FURNITURE INC | | | SCAC4 |
| 70 | HADI | HILLSBORO TRANSPORTATION COMPANY | | | SCAC4 |
| 71 | HADL | HYUNDAI AUSTRALIA DIRECT LINE | | | SCAC4 |
| 72 | HADM | HONEYWELL AEROSPACE DE MEXICO SA DE | | | SCAC4 |
| 73 | HADT | HADLEYS TRUCKING LLC | | | SCAC4 |
| 74 | HADV | HARBOUR ADVANCED MACHINING | | | SCAC4 |
| 75 | HADY | HADLEY EXHIBITS INC | | | SCAC4 |
| 76 | HADZ | HAWTHORNE ARMY AMMUNITION DEPOT | | | PWRC |
| 77 | HAE | Kenmore Crew Leasing, Inc. | Callsign: Holland Air, | USA | AVCODES |
| 78 | HAEC | HALLOWELL EMC | | | SCAC4 |
| 79 | HAED | HARTWIG, ED, TRUCKING&EXCAVATING, INC | | | SCAC1 |
| 80 | HAEI | Heartland Express | | | SCAC2 |
| 81 | HAEI | HEARTLAND EXPRESS SERVICES INC | | | SCAC4 |
| 82 | HAEI | Heartland Express | | USA | TRAFFIC |
| 83 | HAEQ | HAUL-ALL EQUIPMENT LTD | | | SCAC4 |
| 84 | HAES | HARLEYS ELECTRICAL SERVICES LTD | | | SCAC4 |
| 85 | HAEU | HAEWOO GLS CO LTD | | | SCAC4 |
| 86 | HAEW | HAUSER, ED, TRUCK SERVICE | | | SCAC1 |
| 87 | HAEW | HAUSER, ED TRUCKING SERVICE INCORPO | | | SCAC4 |
| 88 | HAF | Hellenic Air Force | Callsign: Hellenic Air Force, | GR | AVCODES |
| 89 | HAF | Hearst Air Service Ltd. | Callsign: Hearst Air, | CDN | AVCODES |
| 90 | HAF | Hellenic Air Force | | | ICAO1 |
| 91 | HAFB | HILLFIELD AIRBASE | | | PWRC |
| 92 | HAFC | HAFNERS, CHUCK FARMERS MARKET AND G | | | SCAC4 |
| 93 | HAFE | HAFER, WM | | | SCAC1 |
| 94 | HAFF | H & FRIENDS FREIGHT INC | | | SCAC4 |
| 95 | HAFG | HARBOR FREIGHT TRANSPORT CORP | | | SCAC4 |
| 96 | HAFI | HALEY TRACTOR & EQUIPMENT | | | SCAC4 |
| 97 | HAFK | HAFER TRUCK SERVICE INC | | | SCAC4 |
| 98 | HAFL | HARBIN FREIGHT LINES/BHM EXPRESS (D | | | SCAC4 |
| 99 | HAFO | HANDFORD OIL & ASPHALT INC | | | SCAC4 |
| 100 | HAFR | HORIZON AIR FREIGHT INC | | | SCAC4 |
