| 1 | HMB | CHC Global Operations | Callsign: Hummingbird, | CDN | AVCODES |
| 2 | HMB | Härtsfeld-Museumsbahn e.V. | Neresheim | D | privat-bahn.de |
| 3 | HMBAU | H&M Bau GmbH | | DE | VKM |
| 4 | HMBC | HAMBONE TRUCKING LLC | | | SCAC4 |
| 5 | HMBD | HAMILTON CONSTRUCTION LLC | | | SCAC4 |
| 6 | HMBE | HAMMONIA REEDERE | | | SCAC4 |
| 7 | HMBI | HOMAN & CO INC | | | SCAC4 |
| 8 | HMBK | H M B TRUCKING | | | SCAC4 |
| 9 | HMBS | HALCOMB, R & J TRANSPORTATION INC | | | SCAC4 |
| 10 | HMBX | HELM Financial Corp. | added 1/2007 | | NAKINA |
| 11 | HMBX | HELM FINANCIAL CORP. | | | PWRC |
| 12 | HMBX | HELM FINANCIAL CORPORATION | | | SCAC4 |
| 13 | HMBY | H & M BAY INC | | | SCAC4 |
| 14 | HMBZ | HELLMANS BREWING CO. | | | PWRC |
