| 4601 | HUF | Hungarian Air Force | ICAO1 | ||
| 4602 | HUFF | HUFFMAN TRUCKING | SCAC4 | ||
| 4603 | HUFM | HUFFMAN, SCOTT | SCAC4 | ||
| 4604 | HUFO | HUFFMAN OIL COMPANY INC | SCAC4 | ||
| 4605 | HUGE | HUGUENOT ENERGY LLC | SCAC4 | ||
| 4606 | HUGG | HUGGHINS TRANSPORTATION INC | SCAC4 | ||
| 4607 | HUGH | HUGHES TRUCKING INC | SCAC4 | ||
| 4608 | HUGI | HUDGINS TRUCKING INC | SCAC4 | ||
| 4609 | HUGM | HUGO MESSENGER SERVICE INC | SCAC4 | ||
| 4610 | HUGR | HURTIGRUTEN ASA | SCAC4 | ||
| 4611 | HUGS | HUGHES TRUCKING & CONTRACTING | SCAC4 | ||
| 4612 | HUGU | HUBE GLOBAL CO LTD | SCAC4 | ||
| 4613 | HUHB | HUGHES BROTHERS TRANSPORTATION, INC | SCAC1 | ||
| 4614 | HUHB | HUGHES BROTHERS TRANSPORTATION INC | SCAC4 | ||
| 4615 | HUHE | HUGHES BROS INC | SCAC4 | ||
| 4616 | HUHL | HUGHES & HILL INC | SCAC4 | ||
| 4617 | HUJC | HUNT, J C COMPANY INC | SCAC4 | ||
| 4618 | HUKB | Hümmlinger Kreisbahn | D | TRAFFIC | |
| 4619 | HUKD | HUSKINS, D C & SONS TRUCKING | SCAC4 | ||
| 4620 | HUKG | HUNTER TRUCKING INC | SCAC4 | ||
| 4621 | HUKU | HUKTRA (UK) LIMITED | PWRC | ||
| 4622 | HUKU | Huktra | RSRV | ||
| 4623 | HUKU | HUKTRA NV | SCAC4 | ||
| 4624 | HULG | HULL TRUCKING INC | SCAC4 | ||
| 4625 | HULJ | HULL, JOHN TRUCKING | SCAC4 | ||
| 4626 | HULL | HULL TRANSPORT LTD | SCAC4 | ||
| 4627 | 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 | GB | TRAFFIC |
| 4628 | HULLCT | Hull Corporation Transport | GB | TRAFFIC | |
| 4629 | HULO | HUTTON, LLOYD TRANSPORT LIMITED | SCAC4 | ||
| 4630 | HUMB | HUMBOLDT EXPRESS, INC | SCAC4 | ||
| 4631 | HUMD | HUMMER, DON TRUCKING CORPORATION | SCAC4 | ||
| 4632 | HUME | HUME TRUCKING LLC | SCAC4 | ||
| 4633 | HUMI | HUMCO INC | SCAC4 | ||
| 4634 | HUMJ | HUME, JASON TRUCKING | SCAC4 | ||
| 4635 | HUMM | HUMME | SCAC4 | ||
| 4636 | HUMN | HUNTSMAN TRUCKING INC | SCAC4 | ||
| 4637 | HUMP | HURON MOTOR PRODUCTS LIMITED | SCAC4 | ||
| 4638 | HUMR | HUMPHREY | SCAC4 | ||
| 4639 | HUMS | HUMBOLDT MOVING & STORAGE CO | SCAC1 | ||
| 4640 | HUMT | HUMBERVIE | SCAC4 | ||
| 4641 | HUNA | HUNT TRANSPORTATION INC | SCAC4 | ||
| 4642 | HUNC | Hungarocamion | H | TRAFFIC | |
| 4643 | HUND | HUNOLD OIL | SCAC4 | ||
| 4644 | HUNH | HUN LOGISTICS | SCAC4 | ||
| 4645 | HUNI | HUNTER OIL CO INC | SCAC4 | ||
| 4646 | HUNN | HUNT & SONS INC | SCAC4 | ||
| 4647 | HUNO | HUNTER TRANSPORTATION INC | SCAC4 | ||
| 4648 | HUNT | HUNT INC. | PWRC | ||
| 4649 | HUNU | NORFOLK SOUTHERN CORPORATION | SCAC4 | ||
| 4650 | HUNX | Huntting Elevator Co. | added 1/1983; eliminated 10/1990 | NAKINA | |
| 4651 | HUNX | Huntting Elevator Co. | added 1/83; eliminated 10/90 | NRHS | |
| 4652 | HUNX | *HUNTTING ELEVATOR CO. | PWRC | ||
| 4653 | HUNX | *CP HUNTINGTON RAILROAD HISTORICAL SOCIETY, INC. | PWRC | ||
| 4654 | HUNX | Huntting Elevator | RSRV | ||
| 4655 | HUNX | CP HUNTINGTON RAILROAD HISTORICAL S | SCAC4 | ||
| 4656 | HUOD | HOUSTON DISTRIBUTION INC | SCAC4 | ||
| 4657 | HUOL | HUELS OIL CO | SCAC4 | ||
| 4658 | HUPAC | Hupac Intermodal Ltd | CH | TRAFFIC | |
| 4659 | HUPAC | Hupac SA | CH | VKM | |
| 4660 | HUPIT | Hupac Italia | I | TRAFFIC | |
| 4661 | HUPX | Harvey Crude Oil Co. (Crystal White Oil Refining Co.) | 7/1923 | NAKINA | |
| 4662 | HUPX | Harvey Universal Petroleum Corp. (Harvey Crude Oil Co.) | 8/1920 | NAKINA | |
| 4663 | HUPX | CRYSTAL WHITE OIL REFOINING CO. [HARVEY CRUDE OIL CO.; HARVEY UNIVERSAL PETROLEUM CORP.] | PWRC | ||
| 4664 | HUQL | HULL, DAN DISTRIBUTING INC | SCAC4 | ||
| 4665 | HUR | Miami Air Charter | ICAO1 | ||
| 4666 | HURB | HURONWEB OFFSET PRINTING INC | SCAC4 | ||
| 4667 | HURC | HUNTER, ROY C TRUCKING INC | SCAC4 | ||
| 4668 | HURF | HUMMER, FRITZ TRUCKING INC | SCAC4 | ||
| 4669 | HURI | HURRICANE TRUCKING INC | SCAC4 | ||
| 4670 | HURK | HURRICANE TRUCKING INC | SCAC4 | ||
| 4671 | HURL | HURLOCK, B D SALES & | SCAC4 | ||
| 4672 | HURO | HURON OIL COMPANY LLC | SCAC4 | ||
| 4673 | HURT | HURT COMPANY INC, THE | SCAC4 | ||
| 4674 | HURX | Hurley Gasoline Co. | 7/1923-7/1930 | NAKINA | |
| 4675 | HURX | HURLEY GASOLINE CO. | PWRC | ||
| 4676 | HUS | Huessler Air Service | ICAO1 | ||
| 4677 | HUSA | HOUSTON TUBULARS INC | SCAC4 | ||
| 4678 | HUSC | HOUSTON TRANSPORTATION INCORPORATED | SCAC4 | ||
| 4679 | HUSE | HUSKER COOP | SCAC4 | ||
| 4680 | HUSG | HUSSONG FREIGHT LINES INC | SCAC4 | ||
| 4681 | HUSH | HUGHES TRUCKING | SCAC1 | ||
| 4682 | HUSK | HUSKY HEATING OIL CO LLC | SCAC4 | ||
| 4683 | HUSN | HUGHSON TRUCKING INC | SCAC4 | ||
| 4684 | HUSR | HOUSER TRANSPORT INC | SCAC4 | ||
| 4685 | HUSS | HUSS TRUCKING CO | SCAC4 | ||
| 4686 | HUST | HUSTON, R G TRUCKING LLC | SCAC4 | ||
| 4687 | HUSU | INTER MODAL SOLUTIONS B. V | SCAC4 | ||
| 4688 | HUSY | HUSSEY, DON LLC | SCAC4 | ||
| 4689 | HUSZ | HUDSON SEEDERS | PWRC | ||
| 4690 | HUT | Aerotransportes Huitzilin | ICAO1 | ||
| 4691 | HUTC | HUTCHINSON INDUSTRIES CANADA INC | SCAC4 | ||
| 4692 | HUTD | HURON TRACTOR LTD | SCAC4 | ||
| 4693 | HUTK | HUTT TRUCKING CO | SCAC4 | ||
| 4694 | HUTL | HUNTER TRUCKING LTD | SCAC4 | ||
| 4695 | HUTN | HUTTON TRANSPORT LIMITED | SCAC4 | ||
| 4696 | HUTP | HUNTS TRANSPORT LIMITED | SCAC4 | ||
| 4697 | HUTT | HUTCHISON TRANSPORTATION | SCAC4 | ||
| 4698 | HUTT | Verkehrsbetrieb Hüttebräucker GmbH | D | TRAFFIC | |
| 4699 | HUTX | Hutchinson Transportation Co. | added 1/1997; 7/2000-7/2005 | NAKINA | |
| 4700 | HUTX | Hutchinson Transportation Co. | added 1/97; 7/2000 | NRHS |