| 101 | HKR | Tower Aviation Management LLC d/b/a A2V | Callsign: Data Bird, | USA | AVCODES |
| 102 | HKR | Hawk Air | | | ICAO1 |
| 103 | HKRA | HOEKSTRA TRANSPORTATION LLC | | | SCAC4 |
| 104 | HKRD | HOEKSTRA DEDICATED (DIV OF HOEKSTRA | | | SCAC4 |
| 105 | HKRE | HINKLEY, R E CO INC | | | SCAC4 |
| 106 | HKREHA | The Hong Kong Society for Rehabilitation | | HK | TRAFFIC |
| 107 | HKRL | HOEKSTRA LOGISTICS LLC | | | SCAC4 |
| 108 | HKRN | HAMELIN, KRISTIN | | | SCAC4 |
| 109 | HKS | Helikopter Service A/S | IATA: L5, Callsign: Helibus, Name changed to CHC Helikopter Service AS | N | AVCODES |
| 110 | HKS | Helikopter Service A/S | IATA: HK, Callsign: Helibus, | N | AVCODES |
| 111 | HKS | CHC Helikopter Service AS | IATA: L5, Callsign: Helibus, Designator L5 recalled by IATA. Name changed from Helikopter Service A/S | N | AVCODES |
| 112 | HKS | CHC Helikopter Service AS | Callsign: Helibus, Designator L5 recalled by IATA. Name changed from Helikopter Service A/S | N | AVCODES |
| 113 | HKS | CHC Helikopter Service | | | ICAO1 |
| 114 | HKSB | HAMRICK SR, BRET T | | | SCAC4 |
| 115 | HKSC | HUCKABAY, KENT S LLC | | | SCAC4 |
| 116 | HKSD | HOOKS, DUANE | | | SCAC4 |
| 117 | HKSL | HENRIKSEN, AL TRANS | | | SCAC4 |
| 118 | HKSN | HOCKERSMITH TRANSPORTATION SERVICES COMPANY, INC | | | SCAC1 |
| 119 | HKSP | HAWK SHIPPING LLC | | | SCAC4 |
| 120 | HKSR | H K SPEED EXPRESS INC | | | SCAC4 |
| 121 | HKST | HILKER, STEVE TRUCKING INC | | | SCAC4 |
| 122 | HKTD | HK TOWING LLC | | | SCAC4 |
| 123 | HKTI | HANCOCK TRUCKING LLC | | | SCAC4 |
| 124 | HKTK | HUKRIEDE TRUCKING INC | | | SCAC4 |
| 125 | HKTN | H K P TRUCKING | | | SCAC4 |
| 126 | HKTO | HANADARKO TRANSPORT LLC | | | SCAC4 |
| 127 | HKTU | KLAESER INT FACHSPEDITION & FAHRZEUGBAU GMBH | | D | BIC |
| 128 | HKTU | HONG KONG ISLANDS LINE | | | PWRC |
| 129 | HKTU | Hong Kong Islands Line | | | RSRV |
| 130 | HKTU | KLAESER INT FACHSPEDITION & FARHZEU | | | SCAC4 |
| 131 | HKUE | HOKU EXPRESS INC | | | SCAC4 |
| 132 | HKUT | HANSEN, KURT | | | SCAC4 |
| 133 | HKUU | HONG KONG ISLANDS LINE | | | PWRC |
| 134 | HKUU | Hong Kong Islands Line | | | RSRV |
| 135 | HKV | Inversiones Hucaven C.A. | Callsign: Hucaven, | YV | AVCODES |
| 136 | HKVS | HOOK, V B & COMPANY INC | | | SCAC4 |
| 137 | HKWC | HOFFMANN, K W TRANSPORT COMPANY LLC | | | SCAC4 |
| 138 | HKX | Hamburg-Köln-Express GmbH | Berlin | D | privat-bahn.de |
| 139 | HKXC | HANKS TRANSPORTATION LLC | | | SCAC4 |
| 140 | HKXI | HIGHMARK TRANSPORT INC | | | SCAC4 |
| 141 | HKXS | HOOKER TRANSPORTATION SERVICES LLC | | | SCAC4 |
| 142 | HKYE | HAWKEYE TRANSPORTATION SERVICES INC | | | SCAC4 |
| 143 | HKYU | Hankyu Railway | Hankyu Railway (Hankyu- Dentetsu) is a Japanese private railway that provides commuter and interurban service to the northern Kansai region. Its main terminal is at Umeda Station in Osaka. The signature color of Hankyu cars is maroon. | J | TRAFFIC |
| 144 | HKZTS | Huta Katowice Zakład Transportu Samochodowego sp. z o.o. | | PL | TRAFFIC |
| 145 | HKZZ | HONG KONG ISLANDS LINE | | | PWRC |
| 146 | HKZZ | Hong Kong Islands Line | | | RSRV |
| 147 | HKZZ | HONG KONG ISLANDS LINE AMERICA S A | | | SCAC4 |
