| 1 | HW | Hastrabau-Wegener GmbH & Co. KG | DE | VKM | |
| 2 | HWAD | HERWYNEN SAW MILL LTD | SCAC4 | ||
| 3 | HWAP | HOWELL TRUCKING | SCAC4 | ||
| 4 | HWAR | HOWARD PETROLEUM CO | SCAC4 | ||
| 5 | HWAS | HAWKEYE NORTH AMERICAN | SCAC4 | ||
| 6 | HWAW | HAWLEY, AL TRUCKING INC | SCAC4 | ||
| 7 | HWAY | HAMBURG FIREWORKS DISPLAY INC | SCAC4 | ||
| 8 | HWB | Hochwaldbahn e.V. | Hermeskeil (auch: Hochwaldbahn GmbH) | D | privat-bahn.de |
| 9 | HWB | Huttwil-Wolhusen-Bahn | CH | TRAFFIC | |
| 10 | HWB | HWB Hochwaldbahn Servicegesellschaft mbH | DE | VKM | |
| 11 | HWBG | Hochwaldbahn: HWB Verkehrsgesellschaft mbH | Real: HWB | D | TRAFFIC |
| 12 | HWBI | HOWARD, BILL CO INC | SCAC4 | ||
| 13 | HWBJ | HARTWELL, B JOE TRUCKING | SCAC4 | ||
| 14 | HWBK | H W B TRUCKING | SCAC4 | ||
| 15 | HWBM | HOWELL, BILL TRUCKING INC (MAXI DIV | SCAC4 | ||
| 16 | HWBR | HIGHWAYS & SKYWAYS INC | SCAC4 | ||
| 17 | HWBU | HANS W BARBE CHEMISCHE ERZEUGNISSE | SCAC4 | ||
| 18 | HWBV | HOWELL, BILL TRUCKING INC (VAN DIVI | SCAC4 | ||
| 19 | HWBV | Hochwaldbahn e.V. | Real: HWB | D | TRAFFIC |
| 20 | HWBV | HWB Verkehrsgesellschaft mbH | DE | VKM | |
| 21 | HWBZ | Hochwaldbahn | Real: HWB, City: Zittau | D | TRAFFIC |
| 22 | HWCA | HWC TRANSPORTATION LLC | SCAC4 | ||
| 23 | HWCC | HOWL TRANSPORTATION LLC | SCAC4 | ||
| 24 | HWCG | HAWAII CARGO SERVICES INC | SCAC4 | ||
| 25 | HWCI | HANDLE WITH CARE INC | SCAC4 | ||
| 26 | HWCN | H & W CONTRACT CARRIERS INC | SCAC4 | ||
| 27 | HWCQ | HODGES WAREHOUSE, Port City Properties, INC | SCAC1 | ||
| 28 | HWCQ | HODGES WAREHOUSE | SCAC4 | ||
| 29 | HWCR | HALLIBURTON CO | PWRC | ||
| 30 | HWCR | HOLLOWAY COURIER SERVICES LTD | SCAC4 | ||
| 31 | HWCT | HIWAY COURIER AND TRUCKING | SCAC4 | ||
| 32 | HWCX | Halliburton Energy Services, Inc. | added 4/2004; 7/2005 | NAKINA | |
| 33 | HWCX | Halliburton Co. | added 10/1960; 4/1961-7/2000; eliminated 4/2004 | NAKINA | |
| 34 | HWCX | Halliburton Oil Well Cementing Co. | 1/1946-10/1957; eliminated 10/1960 | NAKINA | |
| 35 | HWCX | Halliburton Co. | added 10/60; 4/61-7/2000 | NRHS | |
| 36 | HWCX | Halliburton Oil Well Cementing Co. | 1/52-10/57; eliminated 10/60 | NRHS | |
| 37 | HWCX | HALLIBURTON ENERGY SERVICES CO. {HALLIBURTON OIL WELL CEMENTING CO.] | PWRC | ||
| 38 | HWCX | Halliburton | RSRV | ||
| 39 | HWCX | HALLIBURTON ENERGY SERVICES INC | SCAC4 | ||
| 40 | HWCX | Halliburton Co. | USA | TRAFFIC | |
| 41 | HWCY | HANDLE WITH CARE MOVING SYSTEMS LTD | SCAC4 | ||
| 42 | HWD | HPM Investments | ICAO1 | ||
| 43 | HWDA | HOG WILD TRANSPORTATION INC | SCAC4 | ||
| 44 | HWDG | HOWARD LOGISTIC INC | SCAC4 | ||
| 45 | HWDI | HOWLIN HILL TRANS | SCAC4 | ||
| 46 | HWDO | H & W DELIVERY | SCAC4 | ||
| 47 | HWDQ | HOLLYWOOD DELIVERY SERVICE, INC | SCAC1 | ||
| 48 | HWDQ | HOLLYWOOD DELIVERY SERVICE INC | SCAC4 | ||
| 49 | HWDS | H W DELIVERY SYSTEMS CORP | SCAC4 | ||
| 50 | HWDT | HOWARD TRUCKING | SCAC4 | ||
| 51 | HWEA | HWE AGRICULTURAL TECHNOLOGY LTD | SCAC4 | ||
| 52 | HWEB | HARTWELL, BERT | SCAC4 | ||
| 53 | HWEL | HOPEWELL TRUCKING | SCAC4 | ||
| 54 | HWEP | HOWARDS EXPRESS (DIV OF RIST TRANSP | SCAC4 | ||
| 55 | HWEQ | H & W EQUIPMENT FOR VINEYARD & | SCAC4 | ||
| 56 | HWES | HOPEWELL ENTERPRISES | SCAC4 | ||
| 57 | HWFI | HOWELL FUEL INC | SCAC4 | ||
| 58 | HWFL | HIGHWAY FUEL | SCAC4 | ||
| 59 | HWFM | HOLOWATY FARMS LTD | SCAC4 | ||
| 60 | HWFN | HIGHWAY 15 RECYCLING AND AUTO SALVA | SCAC4 | ||
| 61 | HWGN | HOWGEN TRANSPORT CO INC | SCAC4 | ||
| 62 | HWGO | HOWARD GASOLINE & OIL CO | SCAC4 | ||
| 63 | HWHS | HONIGS WHISTLE STOP | SCAC4 | ||
| 64 | HWHT | HOFER TRUCKING | SCAC1 | ||
| 65 | HWHU | HELLEMAN WAREHOUSING | SCAC4 | ||
| 66 | HWIA | HOSPIRA WORLDWIDE INC | SCAC4 | ||
| 67 | HWIC | HIPPO WORKS INC | SCAC4 | ||
| 68 | HWIF | HAWAII TRANSFER CO LTD | SCAC4 | ||
| 69 | HWIU | Healdworks | RSRV | ||
| 70 | HWJN | HOWLAND, JOHN | SCAC4 | ||
| 71 | HWJR | HEWITT, J R INC | SCAC4 | ||
| 72 | HWKA | HAWKINS CHARTER SERVICE INC | SCAC4 | ||
| 73 | HWKB | HAWTHORNE TRUCKING LLC | SCAC4 | ||
| 74 | HWKC | HANDWERK CONTRACTORS | SCAC4 | ||
| 75 | HWKH | HARTWICK & HAND INC | SCAC4 | ||
| 76 | HWKI | HAWKINS TRUCKING L C | SCAC4 | ||
| 77 | HWKK | HAWK-N-TRANS TRUCKING LLC | SCAC4 | ||
| 78 | HWKN | HAWKS, LOREN | SCAC4 | ||
| 79 | HWKO | HAWKES, WILLIAM PRODUCTS | SCAC4 | ||
| 80 | HWKP | HAWKS TRANSPORT | SCAC4 | ||
| 81 | HWKQ | HOLLYWOOD TRUCKING SOLUTIONS INC | SCAC4 | ||
| 82 | HWKT | HAWK, RANDY TRUCKING INC | SCAC4 | ||
| 83 | HWKW | HAWKWAY INDUSTRIES INC | SCAC4 | ||
| 84 | HWLB | H & W LOGISTICS INC | SCAC4 | ||
| 85 | HWLC | HOT-WOODS LLC | SCAC4 | ||
| 86 | HWLE | H & W LOGISTICS INC | SCAC4 | ||
| 87 | HWLF | HODGES WAREHOUSE & LOGISTICS | SCAC4 | ||
| 88 | HWLI | HUNTINGTON WOODS LOGISTICS INC | SCAC4 | ||
| 89 | HWLM | HIGHWORK LIMITED | SCAC4 | ||
| 90 | HWLQ | HORST WELDING | SCAC4 | ||
| 91 | HWLS | HOWELLS MOTOR FREIGHT INC | SCAC4 | ||
| 92 | HWLW | HOWARD, LEWIS C INC | SCAC4 | ||
| 93 | HWML | HAWTHORNE DE MEXICO S DE RL DE C V | SCAC4 | ||
| 94 | HWMT | HOWMET TRANSPORT SERVICES, INC | SCAC1 | ||
| 95 | HWMT | HOWMET TRANSPORT SERVICES INC | SCAC4 | ||
| 96 | HWMX | The H.W. Madison Co. | 7/1937-10/1957; eliminated 4/1961 | NAKINA | |
| 97 | HWMX | The H.W. Madison Co. | 4/38-10/57; eliminated 4/61 | NRHS | |
| 98 | HWMX | H. W. MADISON CO. | PWRC | ||
| 99 | HWNC | HURON WINDOW CORPORATION | SCAC4 | ||
| 100 | HWNF | HILDEBRAND WAYNE & FELSCH | SCAC4 |