| 4101 | HSMC | HOLLANDER INTERNATIONAL STORAGE AND | SCAC4 | ||
| 4102 | HSMG | HANDLING SPECIALTY MANUFACTURING LI | SCAC4 | ||
| 4103 | HSMI | HEWITT, S M (SARNIA) LTD | SCAC4 | ||
| 4104 | HSMN | HOLLYWOOD & SPORTS MEMORABILIA INC | SCAC4 | ||
| 4105 | HSMX | Housmex, Inc. | added 1/1986; eliminated 7/1992; 1/1994 (not listed) | NAKINA | |
| 4106 | HSMX | Housmex, Inc. | added 1/86; eliminated 7/92; 1/94 | NRHS | |
| 4107 | HSMX | *HESSEN STEAM MUSEUM | PWRC | ||
| 4108 | HSMX | *HOUSMEX, INC. | PWRC | ||
| 4109 | HSNA | HOSANNA ENTERPRISES | SCAC4 | ||
| 4110 | HSNB | HANSON, MAX B | SCAC4 | ||
| 4111 | HSNE | HANSENS BEVERAGE COMPANY | SCAC4 | ||
| 4112 | HSNG | HODSONS TRUCKING | SCAC4 | ||
| 4113 | HSNI | HARRISON-NICHOLS CO LTD | SCAC4 | ||
| 4114 | HSNK | HOUSTON TRUCKING | SCAC4 | ||
| 4115 | HSNL | HAISTON OIL CO | SCAC4 | ||
| 4116 | HSNM | H & M TRUCKING INC | SCAC4 | ||
| 4117 | HSNP | HOUSTON SHIPPING INC. | SCAC4 | ||
| 4118 | HSNR | HANSON TRUCKING | SCAC4 | ||
| 4119 | HSNU | HYOSUNG CORPORATION | SCAC4 | ||
| 4120 | HSO | Campania Helicopteros De Transporte | ICAO1 | ||
| 4121 | HSOC | HOSCO INC | SCAC4 | ||
| 4122 | HSOD | HELLER & SONS DISTRIBUTING INC | SCAC4 | ||
| 4123 | HSOF | HENGSOFT | SCAC4 | ||
| 4124 | HSOI | HAYS & SON OIL CO INC | SCAC4 | ||
| 4125 | HSOL | H & S OIL COMPANY INC | SCAC4 | ||
| 4126 | HSOR | Hisatsu Orange Railway | J | TRAFFIC | |
| 4127 | HSP | ICAO1 | |||
| 4128 | HSPA | HANSSY SHIPPING PTE LTD | SCAC4 | ||
| 4129 | HSPC | HORNET SHIPPING COMPANY LIMITED | SCAC4 | ||
| 4130 | HSPD | HULSE, PAUL D | SCAC4 | ||
| 4131 | HSPG | HENFORD SHIPPING LTD | SCAC4 | ||
| 4132 | HSPI | HESPERIA TRANSFER & STORAGE CO | SCAC4 | ||
| 4133 | HSPN | HEAT SMART PLUS INC | SCAC4 | ||
| 4134 | HSPO | HESS CORPORATION | SCAC4 | ||
| 4135 | HSPP | HORTON SUPPLY INC | SCAC4 | ||
| 4136 | HSPQ | HILLSIDE PLASTICS INC | SCAC4 | ||
| 4137 | HSPR | HIGH SPEED TRANSPORT | SCAC4 | ||
| 4138 | HSPS | HELLESPONT STEAMSHIP CORPORATION | SCAC4 | ||
| 4139 | HSPT | HOSPITALITY DESIGNS | SCAC4 | ||
| 4140 | HSPW | HERA SHIPPING S R L | SCAC4 | ||
| 4141 | HSR | Citylink Airlines | ICAO1 | ||
| 4142 | HSRA | H & S TRANSPORTATION INC | SCAC4 | ||
| 4143 | HSRC | HANSI'S REFRIGERATED EXPRESS INC | SCAC4 | ||
| 4144 | HSRG | HENSON, ROGER TRUCKING LLC | SCAC4 | ||
| 4145 | HSRN | HOOSIER TRANSIT INC | SCAC4 | ||
| 4146 | HSRO | HASLER OIL COMPANY INC | SCAC4 | ||
| 4147 | HSRR | Hardin Southern R.R., Inc. | 1/1994-7/2005 | NAKINA | |
| 4148 | HSRR | Hardin Southern R.R., Inc. | 1/94-7/2000 | NRHS | |
| 4149 | HSRR | HARDIN SOUTHERN RAILROAD, INC. | PWRC | ||
| 4150 | HSRR | Hardin Southern Railroad | RSRV | ||
| 4151 | HSRR | HARDIN SOUTHERN RAILROAD INC | SCAC4 | ||
| 4152 | HSRR | Hoboken Shore Railroad | USA | TRAFFIC | |
| 4153 | HSRS | HAPPY STANS RECYCLING SERVICES LTD | SCAC4 | ||
| 4154 | HSRT | HESTER, WAYNE TRUCKING INC | SCAC4 | ||
| 4155 | HSRW | Hamilton Street Railway | CDN | TRAFFIC | |
| 4156 | HSRZ | H & S RAILROAD [HARTFORD & SLOCOMB RAILROAD COMPANY, INC.] | PWRC | ||
| 4157 | HSRZ | H and S Railroad | RSRV | ||
| 4158 | HSS | Compania Transportes Aereos Del Sur | ICAO1 | ||
| 4159 | HSS | S | TRAFFIC | ||
| 4160 | HSSC | HELLENIC STAR SHIPPING COMPANY SA | SCAC4 | ||
| 4161 | HSSD | HANDY SHIPPING SRL | SCAC4 | ||
| 4162 | HSSE | HAMEL STEEL SERVICE | SCAC4 | ||
| 4163 | HSSF | HENRY'S SEAFOOD INC | SCAC4 | ||
| 4164 | HSSL | HOME STORAGE SOLUTIONS LLC | SCAC4 | ||
| 4165 | HSSQ | HAAS SAW & SUPPLY | SCAC4 | ||
| 4166 | HSSR | HAY & STRAW SELLER | SCAC4 | ||
| 4167 | HSSS | HOT SHOT SERVICE | SCAC4 | ||
| 4168 | HSSU | HINDUSTAN SHIPPING S | SCAC4 | ||
| 4169 | HSSV | HOT SHOT SERVICES INC | SCAC4 | ||
| 4170 | HSSW | HASSETT STORAGE WAREHOUSES, INC | SCAC1 | ||
| 4171 | HSSW | HASSETT STORAGE WAREHOUSES INC | SCAC4 | ||
| 4172 | HSSY | HERITAGE SECURITY SERVICES | SCAC4 | ||
| 4173 | HSTA | HS TOSCA SHIPPING COMPANY LTD | SCAC4 | ||
| 4174 | HSTB | Historische Seethalbahn (instead of entry: VHS) | CH | VKM | |
| 4175 | HSTC | HONE & SON TRUCKING CO | SCAC4 | ||
| 4176 | HSTF | HOUSTON TRANSFER & STORAGE CO | SCAC4 | ||
| 4177 | HSTG | HERNANDEZ & SON TRUCKING | SCAC4 | ||
| 4178 | HSTH | HOIST & HAUL | SCAC4 | ||
| 4179 | HSTI | HELLER & SONS TRANSPORTATION INC | SCAC4 | ||
| 4180 | HSTJ | HANDY, SAM TRUCKING | SCAC4 | ||
| 4181 | HSTP | H & S TRANSPORT | SCAC4 | ||
| 4182 | HSTQ | H.S. TRUCKING | SCAC1 | ||
| 4183 | HSTQ | HORSE SHOE TRANSPORTATION INC | SCAC4 | ||
| 4184 | HSTR | HARRISON - SHIELDS TRANSPORTATION | PWRC | ||
| 4185 | HSTU | WASHBAY-LINIE GMBH | SCAC3 | ||
| 4186 | HSTV | HOT SHOT THRILL RIDES INC | SCAC4 | ||
| 4187 | HSTW | HESTER, E L TRUCKING INC | SCAC4 | ||
| 4188 | HSTX | Strauss LLC | 7/2005 (not listed) | NAKINA | |
| 4189 | HSTX | Hinckley & Schmitt | 1/1946-4/1961; eliminated 1/1965 | NAKINA | |
| 4190 | HSTX | Hinckley & Schmitt | 1/52-4/61; eliminated 1/65 | NRHS | |
| 4191 | HSTX | *HINKLEY & SCHMITT | PWRC | ||
| 4192 | HSTX | +STRAUS LLC | PWRC | ||
| 4193 | HSTX | STRAUSS LLC | SCAC4 | ||
| 4194 | HSTZ | HERZOG STONE | PWRC | ||
| 4195 | HSU | Helisul | ICAO1 | ||
| 4196 | HSUG | HULL, SCOTT TRUCKING | SCAC4 | ||
| 4197 | HSV | Svenska Direktflyg | ICAO1 | ||
| 4198 | HSV | Hamburger Sportverein | FAN | TRAFFIC | |
| 4199 | HSVC | H.E.S. TRANSPORTATION SERVICES, INC. | SCAC1 | ||
| 4200 | HSVC | H E S TRANSPORTATION SERVICE INC | SCAC4 |