| 101 | HRGO | HERITAGE OIL INC | | | SCAC4 |
| 102 | HRGS | HARGIS TRUCK LINES | | | SCAC1 |
| 103 | HRGT | HARRINGTON TRUCKING LLC | | | SCAC4 |
| 104 | HRH | Royal Tongan Airlines | IATA: WR, Callsign: Tonga Royal, IATA Prefix: 971, Ceased operatioins | TO | AVCODES |
| 105 | HRH | Friendly Islands Airways Limited | IATA: JK, Callsign: Tonga Royal, | TO | AVCODES |
| 106 | HRH | Royal Tongan Airlines | IATA: WR | | ICAO1 |
| 107 | HRHF | HIRSCH FUELS INC | | | SCAC4 |
| 108 | HRHJ | HUMMER, R H JR INC | | | SCAC4 |
| 109 | HRHP | HANSEN, R H PROPERTIES LLC | | | SCAC4 |
| 110 | HRI | Skraidybos Mokymo Centras | Callsign: Helirim, | LT | AVCODES |
| 111 | HRI | Skyraidybos Mokymo Centras | | | ICAO1 |
| 112 | HRIB | HRIBAR LOGISTICS LLC | | | SCAC4 |
| 113 | HRID | HIGHWAY RIDERS | | | SCAC4 |
| 114 | HRIG | HARRIS, RICHARD G | | | SCAC4 |
| 115 | HRIK | HAMMOND, RICKY | | | SCAC4 |
| 116 | HRIP | HRI INC | | | SCAC4 |
| 117 | HRIT | HEAT RIGHT | | | SCAC4 |
| 118 | HRIX | Merchants Despatch Transportation Corp. | added 10/1955; 10/1957-10/1966; eliminated 10/1969 | | NAKINA |
| 119 | HRIX | Merchants Despatch Transportation Corp. | 10/57-10/66; eliminated 10/69 | | NRHS |
| 120 | HRIX | MERCHANTS DESPATCH TRANSPORTATION CORP. | | | PWRC |
| 121 | HRJB | H & R JACOBSEN INC | | | SCAC4 |
| 122 | HRJC | HARROLD, E J INC | | | SCAC4 |
| 123 | HRJI | H R J INC | | | SCAC4 |
| 124 | HRJL | HUERTA ROMERO, JUAN CARLOS | | | SCAC4 |
| 125 | HRJM | HILLS, RICHARD JAMES | | | SCAC4 |
| 126 | HRJO | HERNANDEZ ROJAS, JUAN FRANCISCO | | | SCAC4 |
| 127 | HRJS | HURTADO, JUAN JOSE | | | SCAC4 |
| 128 | HRJY | HERMAN, JAY TRUCKING | | | SCAC4 |
| 129 | HRK | Herik Rail | | NL | VKM |
| 130 | HRKC | HRT TRUCKING INC | | | SCAC4 |
| 131 | HRKG | HRT TRUCKING INC | | | SCAC4 |
| 132 | HRKI | HIGH ROCKIES TRANSPORTATION | | | SCAC4 |
| 133 | HRKM | HARKEM | | | SCAC4 |
| 134 | HRKQ | HER TRUCKING INC | | | SCAC4 |
| 135 | HRKS | HAMER TRUCKING INC | | | SCAC4 |
| 136 | HRKV | HIGH STAR TRUCKING SERVICES | | | SCAC4 |
| 137 | HRL | Commander Flugdienst GmbH | Callsign: Harley, | D | AVCODES |
| 138 | HRL | Harsco Rail Limited | | UK | VKM |
| 139 | HRLA | HOLT, ROYCE L | | | SCAC4 |
| 140 | HRLB | H & R Lube Blending GmbH | | DE | VKM |
| 141 | HRLC | HARLIN TRUCKING LLC | | | SCAC4 |
| 142 | HRLE | HARRIS, LIONEL OIL CO INC | | | SCAC4 |
| 143 | HRLF | HIGHCROFT RACING LTD | | | SCAC4 |
| 144 | HRLG | HRL TRANSPORT LLC | | | SCAC4 |
| 145 | HRLH | HARDY, LOUIS H TRUCK LINE | | | SCAC4 |
| 146 | HRLI | HEERINGA, R L INC | | | SCAC4 |
| 147 | HRLJ | HOLT, RICK TRUCKING LLC | | | SCAC4 |
| 148 | HRLL | HI RAIL LEASING | | | SCAC4 |
| 149 | HRLP | HARLYN TRANSPORT INC | | | SCAC4 |
| 150 | HRLQ | HILL, R L EXPRESS LLC | | | SCAC4 |
| 151 | HRLT | HIGH ROLLER TRANSPORT LIMITED | | | SCAC4 |
| 152 | HRLU | KARNAPHULI LIMITED | | BD | BIC |
| 153 | HRLU | HUDSON RY EQUIPMENT CO (DIV. OF HUDSON LEASING CO.) | | | PWRC |
| 154 | HRLU | Hudson Railway Equipment (Division of Hudson Leasing) | | | RSRV |
| 155 | HRLX | Housatonic Logistics Co. | added 10/2003; eliminated 4/2004; 7/2005 (not listed) | | NAKINA |
| 156 | HRLX | HOUSATONIC LOGISTICS CO. LLC | | | PWRC |
| 157 | HRLX | HOUSATONIC LOGISTICS COMPANY LLC | | | SCAC4 |
| 158 | HRLZ | HUDSON RY EQUIPMENT CO | | | PWRC |
| 159 | HRLZ | Hudson Railway Equipment | | | RSRV |
| 160 | HRLZ | HUDSON RY EQUIPMENT CO | | | SCAC4 |
| 161 | HRM | Servicios Aereos Helios, S.L. | Callsign: Hermes, | E | AVCODES |
| 162 | HRM | Hermans Air, Inc. | Callsign: Hermens, | USA | AVCODES |
| 163 | HRM | Hermes Airlines | Founded in 2011. Subisdiary of Air Mediterranee | GR | AVCODES |
| 164 | HRMA | HEEREM | | | SCAC4 |
| 165 | HRMC | HARTMAN TRUCKING CO | | | SCAC1 |
| 166 | HRMD | HARMS, DONNIE LLC | | | SCAC4 |
| 167 | HRMG | HARMON, ALLEN TRUCKING INC | | | SCAC4 |
| 168 | HRMJ | HARRIS, R M TRUCKING LLC | | | SCAC4 |
| 169 | HRMK | HERMAN, KEN TRUCKING | | | SCAC4 |
| 170 | HRML | HERMAN/MILES TRUCKING INC | | | SCAC4 |
| 171 | HRMN | HERMANN FORWARDING COMPANY | | | SCAC4 |
| 172 | HRMS | HERITAGE MOVING AND STORAGE | | | SCAC4 |
| 173 | HRMV | HAMPTON ROADS MOVING & STORAGE | | | SCAC4 |
| 174 | HRN | Airwork Ltd. | Callsign: Clansman, | GB | AVCODES |
| 175 | HRN | Heron Luftfahrt Gmbh & Co. KG. | Callsign: Heronair, | D | AVCODES |
| 176 | HRNA | HERNANDEZ MARTINEZ, MARTIN | | | SCAC4 |
| 177 | HRNB | HERNDON BROTHERS INC | | | SCAC4 |
| 178 | HRNC | HORIZON COLONY INC | | | SCAC4 |
| 179 | HRNE | HEARNE, WM P PRODUCE CO INC | | | SCAC4 |
| 180 | HRNI | HARRIER INTERNATIONAL TRANSPORT INC | | | SCAC4 |
| 181 | HRNJ | HERNANDEZ BARRERA, JESUS ALONSO | | | SCAC4 |
| 182 | HRNK | HORSTMAN, MIKE TRUCKING | | | SCAC4 |
| 183 | HRNQ | HOME RUN TRANSPORT INC | | | SCAC4 |
| 184 | HRNR | HERRIN TRANSPORT LLC | | | SCAC4 |
| 185 | HRNS | HENRICH TRANSPORTATION SERVICES | | | SCAC4 |
| 186 | HRNY | HARRISON TRUCKING LLC | | | SCAC4 |
| 187 | HROC | HARMS OIL COMPANY | | | SCAC4 |
| 188 | HROD | HOLLMAN, RODNEY | | | SCAC4 |
| 189 | HRON | HERRON TRANSFER CO | | | SCAC1 |
| 190 | HROQ | HARMS, ROBERT | | | SCAC4 |
| 191 | HROS | HARTMAN & ROSE | | | SCAC4 |
| 192 | HROX | Hanson Aggregates | | | RSRV |
| 193 | HROX | HANSON AGGREGATES LLC, LEHIGH HANSO | | | SCAC4 |
| 194 | HRPE | HART PETROLEUM | | | SCAC4 |
| 195 | HRPI | H & R PRODUCTS SA DE CV | | | SCAC4 |
| 196 | HRPL | HARPEL OIL COMPANY | | | SCAC4 |
| 197 | HRPM | HERR PETROLEUM CORP | | | SCAC4 |
| 198 | HRPN | HR TRANSPORTATION LLC | | | SCAC4 |
| 199 | HRPR | HARPER OIL PRODUCTS INC | | | SCAC4 |
| 200 | HRQL | HR LOGISTICS LLC | | | SCAC4 |
