| 101 | HULL | Hull Trains | Hull Trains is a train operating company in the United Kingdom, running up to six long distance services each day between London Kings Cross and Hull, calling at Grantham, Retford, Doncaster, Selby, Howden and Brough. It is owned by First Group following the buyout of its previous parent company, GB Railways. Hull Trains is one of the three ‘open access’ rail operators in the UK, meaning that instead of owning a franchise and operating a level of service laid down by the Strategic Rail Authority, it applied for, and was awarded in 2002, access rights for 10 years by the Office of the Rail Regulator. | GB | TRAFFIC |
| 102 | HULLCT | Hull Corporation Transport | | GB | TRAFFIC |
| 103 | HULO | HUTTON, LLOYD TRANSPORT LIMITED | | | SCAC4 |
| 104 | HUM | Hummingbird Helicopters Maldives (Pvt) Ltd. | Callsign: Hum, Name changed to Trans Maldivian Airways | MV | AVCODES |
| 105 | HUMB | HUMBOLDT EXPRESS, INC | | | SCAC4 |
| 106 | HUMD | HUMMER, DON TRUCKING CORPORATION | | | SCAC4 |
| 107 | HUME | HUME TRUCKING LLC | | | SCAC4 |
| 108 | HUMI | HUMCO INC | | | SCAC4 |
| 109 | HUMJ | HUME, JASON TRUCKING | | | SCAC4 |
| 110 | HUMM | HUMME | | | SCAC4 |
| 111 | HUMN | HUNTSMAN TRUCKING INC | | | SCAC4 |
| 112 | HUMP | HURON MOTOR PRODUCTS LIMITED | | | SCAC4 |
| 113 | HUMR | HUMPHREY | | | SCAC4 |
| 114 | HUMS | HUMBOLDT MOVING & STORAGE CO | | | SCAC1 |
| 115 | HUMT | HUMBERVIE | | | SCAC4 |
| 116 | HUN | Solyom Hungarian Airways Air Service And Trading Ltd | Callsign: Hungarian, | H | AVCODES |
| 117 | HUNA | HUNT TRANSPORTATION INC | | | SCAC4 |
| 118 | HUNC | Hungarocamion | | H | TRAFFIC |
| 119 | HUND | HUNOLD OIL | | | SCAC4 |
| 120 | HUNH | HUN LOGISTICS | | | SCAC4 |
| 121 | HUNI | HUNTER OIL CO INC | | | SCAC4 |
| 122 | HUNN | HUNT & SONS INC | | | SCAC4 |
| 123 | HUNO | HUNTER TRANSPORTATION INC | | | SCAC4 |
| 124 | HUNT | HUNT INC. | | | PWRC |
| 125 | HUNU | UNICON INTERNATIONAL CORP. | | PRC | BIC |
| 126 | HUNU | NORFOLK SOUTHERN CORPORATION | | | SCAC4 |
| 127 | HUNX | Huntting Elevator Co. | added 1/1983; eliminated 10/1990 | | NAKINA |
| 128 | HUNX | Huntting Elevator Co. | added 1/83; eliminated 10/90 | | NRHS |
| 129 | HUNX | *HUNTTING ELEVATOR CO. | | | PWRC |
| 130 | HUNX | *CP HUNTINGTON RAILROAD HISTORICAL SOCIETY, INC. | | | PWRC |
| 131 | HUNX | Huntting Elevator | | | RSRV |
| 132 | HUNX | CP HUNTINGTON RAILROAD HISTORICAL S | | | SCAC4 |
| 133 | HUOD | HOUSTON DISTRIBUTION INC | | | SCAC4 |
| 134 | HUOL | HUELS OIL CO | | | SCAC4 |
| 135 | HUPAC | Hupac Intermodal Ltd | | CH | TRAFFIC |
| 136 | HUPAC | Hupac SA | | CH | VKM |
| 137 | HUPIT | Hupac Italia | | I | TRAFFIC |
| 138 | HUPX | Harvey Crude Oil Co. (Crystal White Oil Refining Co.) | 7/1923 | | NAKINA |
| 139 | HUPX | Harvey Universal Petroleum Corp. (Harvey Crude Oil Co.) | 8/1920 | | NAKINA |
| 140 | HUPX | CRYSTAL WHITE OIL REFOINING CO. [HARVEY CRUDE OIL CO.; HARVEY UNIVERSAL PETROLEUM CORP.] | | | PWRC |
| 141 | HUQL | HULL, DAN DISTRIBUTING INC | | | SCAC4 |
| 142 | HUR | Miami Air Charter | Callsign: Hurricane Charter, | USA | AVCODES |
| 143 | HUR | Miami Air Charter | | | ICAO1 |
| 144 | HURB | HURONWEB OFFSET PRINTING INC | | | SCAC4 |
| 145 | HURC | HUNTER, ROY C TRUCKING INC | | | SCAC4 |
| 146 | HURF | HUMMER, FRITZ TRUCKING INC | | | SCAC4 |
| 147 | HURI | HURRICANE TRUCKING INC | | | SCAC4 |
| 148 | HURK | HURRICANE TRUCKING INC | | | SCAC4 |
| 149 | HURL | HURLOCK, B D SALES & | | | SCAC4 |
| 150 | HURO | HURON OIL COMPANY LLC | | | SCAC4 |
| 151 | HURT | HURT COMPANY INC, THE | | | SCAC4 |
| 152 | HURX | Hurley Gasoline Co. | 7/1923-7/1930 | | NAKINA |
| 153 | HURX | HURLEY GASOLINE CO. | | | PWRC |
| 154 | HUS | Heussler Air Service Corp | Callsign: Heussler, | USA | AVCODES |
| 155 | HUS | Huessler Air Service | | | ICAO1 |
| 156 | HUSA | HOUSTON TUBULARS INC | | | SCAC4 |
| 157 | HUSC | HOUSTON TRANSPORTATION INCORPORATED | | | SCAC4 |
| 158 | HUSE | HUSKER COOP | | | SCAC4 |
| 159 | HUSG | HUSSONG FREIGHT LINES INC | | | SCAC4 |
| 160 | HUSH | HUGHES TRUCKING | | | SCAC1 |
| 161 | HUSK | HUSKY HEATING OIL CO LLC | | | SCAC4 |
| 162 | HUSN | HUGHSON TRUCKING INC | | | SCAC4 |
| 163 | HUSR | HOUSER TRANSPORT INC | | | SCAC4 |
| 164 | HUSS | HUSS TRUCKING CO | | | SCAC4 |
| 165 | HUST | HUSTON, R G TRUCKING LLC | | | SCAC4 |
| 166 | HUSU | INTER MODAL SOLUTIONS B. V | | | SCAC4 |
| 167 | HUSY | HUSSEY, DON LLC | | | SCAC4 |
| 168 | HUSZ | HUDSON SEEDERS | | | PWRC |
| 169 | HUT | Aerotransportes Huitzilin, S.A. de C.V. | Callsign: Aerohuitzilin, | MEX | AVCODES |
| 170 | HUT | Aerotransportes Huitzilin | | | ICAO1 |
| 171 | HUTC | HUTCHINSON INDUSTRIES CANADA INC | | | SCAC4 |
| 172 | HUTD | HURON TRACTOR LTD | | | SCAC4 |
| 173 | HUTK | HUTT TRUCKING CO | | | SCAC4 |
| 174 | HUTL | HUNTER TRUCKING LTD | | | SCAC4 |
| 175 | HUTN | HUTTON TRANSPORT LIMITED | | | SCAC4 |
| 176 | HUTP | HUNTS TRANSPORT LIMITED | | | SCAC4 |
| 177 | HUTT | HUTCHISON TRANSPORTATION | | | SCAC4 |
| 178 | HUTT | Verkehrsbetrieb Hüttebräucker GmbH | | D | TRAFFIC |
| 179 | HUTX | Hutchinson Transportation Co. | added 1/1997; 7/2000-7/2005 | | NAKINA |
| 180 | HUTX | Hutchinson Transportation Co. | added 1/97; 7/2000 | | NRHS |
| 181 | HUTX | HUTCHINSON TRANSPORTATION CO | | | PWRC |
| 182 | HUTX | Hutchinson Transportation | | | RSRV |
| 183 | HUTX | HUTCHINSON TRANSPORTATION COMPANY | | | SCAC4 |
| 184 | HUTZ | HUNTER TRANSPORT | | | PWRC |
| 185 | HUV | Hunair Hungarian Airlines Ltd Co. | Callsign: Silver Eagle, | H | AVCODES |
| 186 | HUV | Hunair Hungarian Airlines | | | ICAO1 |
| 187 | HUVH | HUV | | | SCAC4 |
| 188 | HUWY | HUNTERS WAY | | | SCAC4 |
| 189 | HUY | Aero Transportes Del Humaya, S.A. de C.V. | Callsign: Aero Humaya, | MEX | AVCODES |
| 190 | HUY | Aero Transportes Del Humaya | | | ICAO1 |
| 191 | HUYT | HUYSMANS TRUCKING | | | SCAC4 |
