| 1 | HEM | CHC Helicopters | Callsign: Hems, | AUS | AVCODES |
| 2 | HEM | Hemmeter Aviation | Callsign: Hemmeter, | USA | AVCODES |
| 3 | HEM | Helico de Mexico, S.A. de C.V. | Callsign: Hecomex, | MEX | AVCODES |
| 4 | HEM | CHC Helicopters | | | ICAO1 |
| 5 | HEM | Historiche Eisenbahnen Mitteldeutchland GmbH i.G. | | DE | VKM |
| 6 | HEMA | HERMANN LEASING COMPANY | | | SCAC4 |
| 7 | HEMC | HEMO LOGISTICS INC | | | SCAC4 |
| 8 | HEMF | HELPHREY MOTOR FRT INC | | | PWRC |
| 9 | HEMI | HERMES TRANSFER CO | | | SCAC4 |
| 10 | HEMM | HEMM | | | SCAC4 |
| 11 | HEMO | HEM TRANSPORT | | | SCAC4 |
| 12 | HEMP | HEMPEL INTERNATIONAL TRANSPORTATION | | | SCAC4 |
| 13 | HEMP | Hempstead Transit | | USA | TRAFFIC |
| 14 | HEMU | TEMPUS LINK LTD | | BG | BIC |
| 15 | HEMV | HEMME | | | SCAC4 |
| 16 | HEMY | HEMPHILL TRUCKING INC | | | SCAC4 |
