| 1 | HDM | Harley-Davidson Motor Company | Callsign: Hog, | USA | AVCODES |
| 2 | HDM | Hudson & Manhattan | 1/1975-1/1980 | | NAKINA |
| 3 | HDM | Hudson & Manhattan | 1/75-1/80 | | NRHS |
| 4 | HDM | HUDSON & MANHATTAN | | | PWRC |
| 5 | HDM | Hudson and Manhattan | | | RSRV |
| 6 | HDM | Hudson & Manhattan | | US-NY | TRAFFIC |
| 7 | HDMC | HARDI MIDWEST INC | | | SCAC4 |
| 8 | HDMI | HANDEI MACK INC | | | SCAC4 |
| 9 | HDMO | HALLIBURTON DE MEXICO | | | SCAC4 |
| 10 | HDMS | HOLIDAY TRANSFER CO | | | SCAC4 |
| 11 | HDMT | HARDEMAN TRUCKING | | | SCAC4 |
| 12 | HDMU | HMM CO., LTD. | | ROK | BIC |
| 13 | HDMU | HYUNDAI MERCHANT MARINE (AMERICA), INC. | | | PWRC |
| 14 | HDMU | Hyundai Merchant Marine (America) | | | RSRV |
| 15 | HDMU | HYUNDAI MERCHANT MARINE (AMERICA) INC | | | SCAC1 |
| 16 | HDMU | HYUNDAI MERCHANT MARINE | | | SCAC4 |
| 17 | HDMZ | HYUNDAI MERCHANT MARINE (AMERICA), INC. | | | PWRC |
| 18 | HDMZ | Hyundai Merchant Marine (America) | | | RSRV |
| 19 | HDMZ | HYUNDAI MERCHANT MARINE (AMERICA), | | | SCAC4 |
