| Abbreviation | Definition |
|---|---|
| HAI | Home Automation Inc |
| HAI | Home Automation, Inc. |
| HAI | Hotel Adelaide International |
| HAIC | Haryana Agro Industries Corporation |
| HAIL | Honeywell Automation India, Limited |
| HAL | Hindustan Aeronautics Limited |
| HAL | Holland America Line |
| HAL | Holston Associated Libraries |
| HAMC | Harbin Aircraft Manufacturing Corporation |
| HAMC | Hells Angels Motorcycle Corporation |
| HAP | Hamster Alliance Productions |
| HAPI | Hand And Paw Inc |
| HAPI | Healing Arts Project Inc |
| HAPPI | Household and Personal Products Industry |
| HARC | Human Advancement and Repopulation Corporation |
| HARIBO | HAns RIegel BOhn |
| HARM | Halifax Adventure Racing Machines |
| HAWC | Health And Wellness Center |
| HAWCOMPANY | Haider Ali Web Design & Development Company |
| HB | Half Board |