| 4801 | HWAD | HERWYNEN SAW MILL LTD | SCAC4 | ||
| 4802 | HWAP | HOWELL TRUCKING | SCAC4 | ||
| 4803 | HWAR | HOWARD PETROLEUM CO | SCAC4 | ||
| 4804 | HWAS | HAWKEYE NORTH AMERICAN | SCAC4 | ||
| 4805 | HWAW | HAWLEY, AL TRUCKING INC | SCAC4 | ||
| 4806 | HWAY | HAMBURG FIREWORKS DISPLAY INC | SCAC4 | ||
| 4807 | HWB | Hochwaldbahn e.V. | Hermeskeil (auch: Hochwaldbahn GmbH) | D | privat-bahn.de |
| 4808 | HWB | Huttwil-Wolhusen-Bahn | CH | TRAFFIC | |
| 4809 | HWB | HWB Hochwaldbahn Servicegesellschaft mbH | DE | VKM | |
| 4810 | HWBG | Hochwaldbahn: HWB Verkehrsgesellschaft mbH | Real: HWB | D | TRAFFIC |
| 4811 | HWBI | HOWARD, BILL CO INC | SCAC4 | ||
| 4812 | HWBJ | HARTWELL, B JOE TRUCKING | SCAC4 | ||
| 4813 | HWBK | H W B TRUCKING | SCAC4 | ||
| 4814 | HWBM | HOWELL, BILL TRUCKING INC (MAXI DIV | SCAC4 | ||
| 4815 | HWBR | HIGHWAYS & SKYWAYS INC | SCAC4 | ||
| 4816 | HWBU | HANS W BARBE CHEMISCHE ERZEUGNISSE | SCAC4 | ||
| 4817 | HWBV | HOWELL, BILL TRUCKING INC (VAN DIVI | SCAC4 | ||
| 4818 | HWBV | Hochwaldbahn e.V. | Real: HWB | D | TRAFFIC |
| 4819 | HWBV | HWB Verkehrsgesellschaft mbH | DE | VKM | |
| 4820 | HWBZ | Hochwaldbahn | Real: HWB, City: Zittau | D | TRAFFIC |
| 4821 | HWCA | HWC TRANSPORTATION LLC | SCAC4 | ||
| 4822 | HWCC | HOWL TRANSPORTATION LLC | SCAC4 | ||
| 4823 | HWCG | HAWAII CARGO SERVICES INC | SCAC4 | ||
| 4824 | HWCI | HANDLE WITH CARE INC | SCAC4 | ||
| 4825 | HWCN | H & W CONTRACT CARRIERS INC | SCAC4 | ||
| 4826 | HWCQ | HODGES WAREHOUSE, Port City Properties, INC | SCAC1 | ||
| 4827 | HWCQ | HODGES WAREHOUSE | SCAC4 | ||
| 4828 | HWCR | HALLIBURTON CO | PWRC | ||
| 4829 | HWCR | HOLLOWAY COURIER SERVICES LTD | SCAC4 | ||
| 4830 | HWCT | HIWAY COURIER AND TRUCKING | SCAC4 | ||
| 4831 | HWCX | Halliburton Energy Services, Inc. | added 4/2004; 7/2005 | NAKINA | |
| 4832 | HWCX | Halliburton Co. | added 10/1960; 4/1961-7/2000; eliminated 4/2004 | NAKINA | |
| 4833 | HWCX | Halliburton Oil Well Cementing Co. | 1/1946-10/1957; eliminated 10/1960 | NAKINA | |
| 4834 | HWCX | Halliburton Co. | added 10/60; 4/61-7/2000 | NRHS | |
| 4835 | HWCX | Halliburton Oil Well Cementing Co. | 1/52-10/57; eliminated 10/60 | NRHS | |
| 4836 | HWCX | HALLIBURTON ENERGY SERVICES CO. {HALLIBURTON OIL WELL CEMENTING CO.] | PWRC | ||
| 4837 | HWCX | Halliburton | RSRV | ||
| 4838 | HWCX | HALLIBURTON ENERGY SERVICES INC | SCAC4 | ||
| 4839 | HWCX | Halliburton Co. | USA | TRAFFIC | |
| 4840 | HWCY | HANDLE WITH CARE MOVING SYSTEMS LTD | SCAC4 | ||
| 4841 | HWD | HPM Investments | ICAO1 | ||
| 4842 | HWDA | HOG WILD TRANSPORTATION INC | SCAC4 | ||
| 4843 | HWDG | HOWARD LOGISTIC INC | SCAC4 | ||
| 4844 | HWDI | HOWLIN HILL TRANS | SCAC4 | ||
| 4845 | HWDO | H & W DELIVERY | SCAC4 | ||
| 4846 | HWDQ | HOLLYWOOD DELIVERY SERVICE, INC | SCAC1 | ||
| 4847 | HWDQ | HOLLYWOOD DELIVERY SERVICE INC | SCAC4 | ||
| 4848 | HWDS | H W DELIVERY SYSTEMS CORP | SCAC4 | ||
| 4849 | HWDT | HOWARD TRUCKING | SCAC4 | ||
| 4850 | HWEA | HWE AGRICULTURAL TECHNOLOGY LTD | SCAC4 | ||
| 4851 | HWEB | HARTWELL, BERT | SCAC4 | ||
| 4852 | HWEL | HOPEWELL TRUCKING | SCAC4 | ||
| 4853 | HWEP | HOWARDS EXPRESS (DIV OF RIST TRANSP | SCAC4 | ||
| 4854 | HWEQ | H & W EQUIPMENT FOR VINEYARD & | SCAC4 | ||
| 4855 | HWES | HOPEWELL ENTERPRISES | SCAC4 | ||
| 4856 | HWFI | HOWELL FUEL INC | SCAC4 | ||
| 4857 | HWFL | HIGHWAY FUEL | SCAC4 | ||
| 4858 | HWFM | HOLOWATY FARMS LTD | SCAC4 | ||
| 4859 | HWFN | HIGHWAY 15 RECYCLING AND AUTO SALVA | SCAC4 | ||
| 4860 | HWGN | HOWGEN TRANSPORT CO INC | SCAC4 | ||
| 4861 | HWGO | HOWARD GASOLINE & OIL CO | SCAC4 | ||
| 4862 | HWHS | HONIGS WHISTLE STOP | SCAC4 | ||
| 4863 | HWHT | HOFER TRUCKING | SCAC1 | ||
| 4864 | HWHU | HELLEMAN WAREHOUSING | SCAC4 | ||
| 4865 | HWIA | HOSPIRA WORLDWIDE INC | SCAC4 | ||
| 4866 | HWIC | HIPPO WORKS INC | SCAC4 | ||
| 4867 | HWIF | HAWAII TRANSFER CO LTD | SCAC4 | ||
| 4868 | HWIU | Healdworks | RSRV | ||
| 4869 | HWJN | HOWLAND, JOHN | SCAC4 | ||
| 4870 | HWJR | HEWITT, J R INC | SCAC4 | ||
| 4871 | HWKA | HAWKINS CHARTER SERVICE INC | SCAC4 | ||
| 4872 | HWKB | HAWTHORNE TRUCKING LLC | SCAC4 | ||
| 4873 | HWKC | HANDWERK CONTRACTORS | SCAC4 | ||
| 4874 | HWKH | HARTWICK & HAND INC | SCAC4 | ||
| 4875 | HWKI | HAWKINS TRUCKING L C | SCAC4 | ||
| 4876 | HWKK | HAWK-N-TRANS TRUCKING LLC | SCAC4 | ||
| 4877 | HWKN | HAWKS, LOREN | SCAC4 | ||
| 4878 | HWKO | HAWKES, WILLIAM PRODUCTS | SCAC4 | ||
| 4879 | HWKP | HAWKS TRANSPORT | SCAC4 | ||
| 4880 | HWKQ | HOLLYWOOD TRUCKING SOLUTIONS INC | SCAC4 | ||
| 4881 | HWKT | HAWK, RANDY TRUCKING INC | SCAC4 | ||
| 4882 | HWKW | HAWKWAY INDUSTRIES INC | SCAC4 | ||
| 4883 | HWLB | H & W LOGISTICS INC | SCAC4 | ||
| 4884 | HWLC | HOT-WOODS LLC | SCAC4 | ||
| 4885 | HWLE | H & W LOGISTICS INC | SCAC4 | ||
| 4886 | HWLF | HODGES WAREHOUSE & LOGISTICS | SCAC4 | ||
| 4887 | HWLI | HUNTINGTON WOODS LOGISTICS INC | SCAC4 | ||
| 4888 | HWLM | HIGHWORK LIMITED | SCAC4 | ||
| 4889 | HWLQ | HORST WELDING | SCAC4 | ||
| 4890 | HWLS | HOWELLS MOTOR FREIGHT INC | SCAC4 | ||
| 4891 | HWLW | HOWARD, LEWIS C INC | SCAC4 | ||
| 4892 | HWML | HAWTHORNE DE MEXICO S DE RL DE C V | SCAC4 | ||
| 4893 | HWMT | HOWMET TRANSPORT SERVICES, INC | SCAC1 | ||
| 4894 | HWMT | HOWMET TRANSPORT SERVICES INC | SCAC4 | ||
| 4895 | HWMX | The H.W. Madison Co. | 7/1937-10/1957; eliminated 4/1961 | NAKINA | |
| 4896 | HWMX | The H.W. Madison Co. | 4/38-10/57; eliminated 4/61 | NRHS | |
| 4897 | HWMX | H. W. MADISON CO. | PWRC | ||
| 4898 | HWNC | HURON WINDOW CORPORATION | SCAC4 | ||
| 4899 | HWNF | HILDEBRAND WAYNE & FELSCH | SCAC4 | ||
| 4900 | HWNK | HOFER, WENDELL TRUCKING | SCAC4 |