| 1 | HLN | Air Holland Leasing II B.V. | Callsign: Orange, Ceased operations. ICAO callsign changed from Air Holland | NL | AVCODES |
| 2 | HLN | Air Holland Leasing II B.V. | Callsign: Air Holland, ICAO callsign changed to Orange | NL | AVCODES |
| 3 | HLN | Tayaran Alhilall Alnftti | | LAR | AVCODES |
| 4 | HLNA | HALL TRANSPORTATION OF GEORGIA INC | | | SCAC4 |
| 5 | HLNC | HILLS INC | | | SCAC4 |
| 6 | HLND | HIGHLAND EXPRESS | | | SCAC4 |
| 7 | HLNE | Hillsboro and North Eastern Ry. Co. | 1/1975-1/1980; eliminated 7/1985 | | NAKINA |
| 8 | HLNE | Hillsboro and North Eastern Ry. Co. | 1/75-1/80 | | NRHS |
| 9 | HLNE | HILLSBORO & NORTH EASTERN RAILROAD CO. | | | PWRC |
| 10 | HLNE | Hillsboro and North Eastern Railway | | | RSRV |
| 11 | HLNF | HOT-LINE FREIGHT SYSTEM, INC | | | SCAC1 |
| 12 | HLNF | HOT-LINE FREIGHT SYSTEM INC | | | SCAC4 |
| 13 | HLNG | HAULING FREIGHT LINES INC | | | SCAC4 |
| 14 | HLNN | HILL, LYNN TRUCKING | | | SCAC4 |
| 15 | HLNP | HALTON ENTERPRISES | | | SCAC4 |
| 16 | HLNS | HLN SERVICES LTD | | | SCAC4 |
| 17 | HLNT | HAMMER LANE TRANSPORTATION | | | SCAC4 |
