| 4001 | HSCX | +STEEL WHEELS LTD | PWRC | ||
| 4002 | HSCX | Hammond Standish (Steel Wheels) | RSRV | ||
| 4003 | HSCX | STEEL WHEELS LIMITED | SCAC4 | ||
| 4004 | HSCY | HASLER & COMPANY INC | SCAC4 | ||
| 4005 | HSCZ | HIGHLINE SEVEN COOP ELEVATOR | PWRC | ||
| 4006 | HSD | Horst Schuch Dienstleistungen | DE | VKM | |
| 4007 | HSDB | HOT SHOT DELIVERIES INC | SCAC4 | ||
| 4008 | HSDG | HAMBURG SUD D G | SCAC4 | ||
| 4009 | HSDL | HARLAN LABORATORIES INC | SCAC4 | ||
| 4010 | HSDN | HIGH SPEED DELIVERY INC | SCAC4 | ||
| 4011 | HSDT | HOLLAND SPECIAL DELIVERY (TRUCK LOA | SCAC4 | ||
| 4012 | HSDU | DEGUSSA INFRACOR GMBH | SCAC4 | ||
| 4013 | HSDW | HAVI SHIPPING DMCCO | SCAC4 | ||
| 4014 | HSE | Compania Helicopteros Del Sureste | ICAO1 | ||
| 4015 | HSEC | HORSECO TRANSPORTATION LTD | SCAC4 | ||
| 4016 | HSEF | HANSENS FLOWERS LIMITED | SCAC4 | ||
| 4017 | HSEG | HUGGINS & SON | SCAC4 | ||
| 4018 | HSEH | HYLAND SEEDS | SCAC4 | ||
| 4019 | HSEI | HK SERVICES | SCAC4 | ||
| 4020 | HSEL | HOUSES LOADING & SHUTTLE INC | SCAC4 | ||
| 4021 | HSEP | HOT SHOT EXPRESS, INC | SCAC1 | ||
| 4022 | HSEP | HOT SHOT EXPRESS INC | SCAC4 | ||
| 4023 | HSEQ | HERITAGE SERVICES | SCAC4 | ||
| 4024 | HSER | HORSE TRANSPORTATION | SCAC4 | ||
| 4025 | HSES | H & S ENTERPRISES INC | SCAC4 | ||
| 4026 | HSEV | HAZCO SERVICES | SCAC4 | ||
| 4027 | HSEZ | HARVEST STATE ELEVATOR | PWRC | ||
| 4028 | HSF | HSF Haltinger Speisewagenfreunde | CH | VKM | |
| 4029 | HSFD | HENRY SEAFOOD LTD | SCAC4 | ||
| 4030 | HSFF | HONCHOS FREIGHT FORWARDING | SCAC4 | ||
| 4031 | HSFI | HARRIS FUELS INC | SCAC4 | ||
| 4032 | HSFJ | HESS, F J & SONS | SCAC4 | ||
| 4033 | HSFJ | Hvellinge - Skanör - Falsterbo Järnväg | 1904 - 1943 | S | svenska-lok.se |
| 4034 | HSFM | HIGHLAND STOCK FARMS LTD | SCAC4 | ||
| 4035 | HSFU | TIANJIN LVHAI AGRICULTURAL TRADE CO | SCAC4 | ||
| 4036 | HSFZ | ATCHISON, TOPEKA & SANTA FE | PWRC | ||
| 4037 | HSFZ | Atchison, Topeka and Santa Fe Railway (BNSF Railway) | RSRV | ||
| 4038 | HSG | Vossloh High Speed Grinding GmbH | DE | VKM | |
| 4039 | HSGA | HI STAR GROUP INC | SCAC4 | ||
| 4040 | HSGC | HANSA SHIPPING GMBH & CO KG | SCAC4 | ||
| 4041 | HSGL | HARRIER SHIPPING LLC | SCAC4 | ||
| 4042 | HSGP | HARRIS, GENE PETROLEUM INC | SCAC4 | ||
| 4043 | HSGR | HASTINGS MARINE | SCAC4 | ||
| 4044 | HSGW | HASK GROWERS LTD | SCAC4 | ||
| 4045 | HSGZ | HARVEST STATES GRAIN | PWRC | ||
| 4046 | HSH | Albanian Railways - Hekurudha e Shqipërisë | AL | TRAFFIC | |
| 4047 | HSH | Hekurudha Shqiptare SH.A. | AL | VKM | |
| 4048 | HSHM | HISTRIA SHIPMANAGEMENT SRL | SCAC4 | ||
| 4049 | HSHN | HARTSHORN OIL INC | SCAC4 | ||
| 4050 | HSHR | HARRIS, | SCAC4 | ||
| 4051 | HSHT | HOT SHOT TRUCKING LLC | SCAC4 | ||
| 4052 | HSI | Heliswiss | ICAO1 | ||
| 4053 | HSIA | HEATH & SONS INC | SCAC4 | ||
| 4054 | HSIJ | HANSA STARS INC | SCAC4 | ||
| 4055 | HSIM | HIGHWAY STAR INC | SCAC4 | ||
| 4056 | HSIN | Hanshin Electric Railway | J | TRAFFIC | |
| 4057 | HSINHO | Hsinho Bus | City: Taipei | RC | TRAFFIC |
| 4058 | HSIS | HICKENBOTTOM & SONS INC | SCAC4 | ||
| 4059 | HSIT | HEIDEN STRINGED INSTRUMENTS | SCAC4 | ||
| 4060 | HSIU | SHANGHAI HOYER SINOBULK TRANSPORT C | SCAC4 | ||
| 4061 | HSIX | Housing Starts Inc. | added 7/1995; eliminated 10/1997; 7/2000-7/2005 (not listed) | NAKINA | |
| 4062 | HSIX | Housing Starts Inc. | added 7/95; eliminated 10/97; 7/2000 | NRHS | |
| 4063 | HSIX | HOUSING STARTS INC. | PWRC | ||
| 4064 | HSIX | Housing Starts Inc. | RSRV | ||
| 4065 | HSIZ | HOLLY SUGAR INDUSTRY | PWRC | ||
| 4066 | HSJT | HUSS, JIM TRUCKING CO | SCAC4 | ||
| 4067 | HSK | Sky Europe Airlines | ICAO1 | ||
| 4068 | HSKA | HASKINS AUTO SALVAGE | SCAC4 | ||
| 4069 | HSKC | HUSKY MARKETING AND SUPPLY COMPANY | SCAC4 | ||
| 4070 | HSKH | HUSKY HAULERS INC | SCAC4 | ||
| 4071 | HSKI | HIRATAS TRUCKING | SCAC4 | ||
| 4072 | HSKK | HUSKY EXPEDITERS INC | SCAC4 | ||
| 4073 | HSKM | HUSKY ENERGY MARKETING INC | SCAC4 | ||
| 4074 | HSKN | HARRIS TRUCKING | SCAC4 | ||
| 4075 | HSKO | HOSKINS OIL CO LLC | SCAC4 | ||
| 4076 | HSKR | HOOSIER TRUCK BROKERS LLC | SCAC4 | ||
| 4077 | HSKT | HUSKY TRANSPORT INC | SCAC4 | ||
| 4078 | HSKU | HAFSKIP LTD LINE | SCAC4 | ||
| 4079 | HSKW | HARRIS TRUCKING | SCAC4 | ||
| 4080 | HSKX | HUSKY OIL OPERATIONS LTD. | PWRC | ||
| 4081 | HSKX | HUSKY OIL OPERATIONS LIMITED | SCAC4 | ||
| 4082 | HSKY | HUSKY FARM EQUIPMENT LIMITED | SCAC4 | ||
| 4083 | HSL | HSL-Logistik GmbH | Hamburg | D | privat-bahn.de |
| 4084 | HSL | HSL Logistik GmbH | D | TRAFFIC | |
| 4085 | HSL | HSL Logistik GmbH | DE | VKM | |
| 4086 | HSLB | HESTER LOGISTICS LLC | SCAC4 | ||
| 4087 | HSLC | HANSA LINIE CO | SCAC4 | ||
| 4088 | HSLD | HOSELTON STUDIO LIMITED | SCAC4 | ||
| 4089 | HSLE | HUDSON SHIPPING LINES INC | SCAC4 | ||
| 4090 | HSLF | H & STL LLC | SCAC4 | ||
| 4091 | HSLN | HOWE SHIPPING LIMITED | SCAC4 | ||
| 4092 | HSLO | HASSEL, TOM TRANSPORT INC | SCAC4 | ||
| 4093 | HSLQ | H & S LOGISTICS VENTURES LLC | SCAC4 | ||
| 4094 | HSLU | HAULAGE SERVICES, LTD. | PWRC | ||
| 4095 | HSLU | Haulage Services | RSRV | ||
| 4096 | HSLU | HUISMAN SPECIAL LIFTING EQUIPMENT B | SCAC4 | ||
| 4097 | HSLV | HABA SPED LTD | SCAC4 | ||
| 4098 | HSM | Horizon Air for Transport and Training | ICAO1 | ||
| 4099 | HSM | Dutch Iron Railway Company | NL | TRAFFIC | |
| 4100 | HSMA | HARMONIA SHIPPING MANAGEMENT INC | SCAC4 |