| Acronym | Definition |
|---|
| HAPL➣High Average Power Laser Program (USA) |
| HAPL➣High Altitude Power Loss (aviation) |
| HAPL➣Huntley Area Public Library (Huntley, IL) |
| HAPL➣Hazleton Area Public Library (Hazleton, PA) |
| HAPL➣HIV/AIDS Policy and Law Newsletter (Canada) |
| HAPL➣Hatsun Agro Products Ltd. |