| Acronym | Definition |
|---|
| HPPL➣Homeless Pet Placement League (Houston, TX) |
| HPPL➣Highland Park Public Library (various locations) |
| HPPL➣High Pressure Plastic Laminate |
| HPPL➣High Power Photoluminescence |
| HPPL➣hydrostatic pressure photoluminescence |
| HPPL➣Harrington Park Public Library (New Jersey) |