| 1 | HHB | Helsingør - Hornbæk Banen (Hornbækbanen) | 1906 - 1916 | DK | jernbanen.dk |
| 2 | HHB | Hamburger Hafenbahn AG | Hamburg | D | privat-bahn.de |
| 3 | HHB | Helsingør - Hornbæk Banen (Hornbækbanen) | 1906 - 1916 | DK | TRAFFIC |
| 4 | HHB | Hamburger Hafenbahn | | DE | VKM |
| 5 | HHBAU | W.Hundhausen Bauunternehmen GmbH | | DE | VKM |
| 6 | HHBC | HBC HAMBURG BULK CARRIERS GMBH & CO | | | SCAC4 |
| 7 | HHBF | HHBULKERS FIVE LTD | | | SCAC4 |
| 8 | HHBK | H & H BROKERAGE | | | SCAC4 |
| 9 | HHBL | HENDRIK HUDSON BUS LINES INC | | | SCAC4 |
| 10 | HHBT | HUTTERVILLE HUTTERIAN BRETHREN | | | SCAC4 |
