| Abbreviation | Definition |
|---|---|
| HBGX | HBG Enterprises of Tampa Incorporated |
| HBGX | Hillsboro Bottled Gas (HBG Enterprises of Tampa) |
| HBL | Harbor Belt Line |
| HBLR | Hudson–Bergen Light Rail |
| HBRY | Hudson Bay Railway (OmniTRAX) |
| HBRY | Hudson Bay Railway Company |
| HBT | Houston Belt and Terminal Railway |
| HBWX | Georgia Power |
| HBWX | Georgia Power Company |
| HCBX | Chevron Phillips Chemical |
| HCCX | Hercules Cement |
| HCDU | ER Nahrungsmittel Ges.MBH and Company KG. |
| HCDU | ER Nahrungsmittel GmBH and KG |
| HCGU | Houston Container Connection |
| HCGX | North American Salt |
| HCGX | North American Salt Company |
| HCIU | Steam Packet Yard |
| HCLX | HIMONT Canada (Basell Canada) |
| HCLX | Montell Canada Incorporated |
| HCMX | Harnischfeger Corporation |