| Rank | Abbreviation | Meaning |
|---|
| ***** | HPPL | HIGHLAND PARK PUBLIC LIBRARY (Highland Park, NJ)
| |
| **** | HPPL | Harrington Park Public Library (Harrington Park, NJ)
| |
| **** | HPPL | Hewlett-Packard Plotter Language
| |
| **** | HPPL | Huntington Park Public Library (Huntington Park, CA)
| |
| **** | HPPL | hydrostatic pressure photoluminescence
| |
| *** | HPPL | High Point Public Library (High Point, NC)
| |
| *** | HPPL | High Pressure Plastic Laminate
| |
| *** | HPPL | High Power Pulsed Light
| |
| ** | HPPL | high pressure pulsatile lavage
| |
| ** | HPPL | Hitachi Plasma Patent Licensing
| |
| ** | HPPL | Homeless Pet Placement League
| |
| ** | HPPL | Harold Patten Public Library (Tewksbury, MA)
| |
| * | HPPL | hemipharyngectomies with partial laryngectomy
| |
| * | HPPL | High Power Photoluminescence
| |
| * | HPPL | High Performance Photo Luminescent
| |
| * | HPPL | HYDE PARK PUBLIC LIBRARY
| |
| * | HPPL | Hettie Pierce Public Library
| |
| * | HPPL | Hancock Prospecting Pty Ltd
| |
| * | HPPL | High Performance Photoluminescent Lighting
| |
| * | HPPL | Hazira Port Pvt Ltd
| |
| * | HPPL | Hazira Port Private Limited
| |