| Meaning | Category |
| Font information (GEM) | Computing->File Extensions |
| Hasso Plattner Institut | Academic & Science->Universities |
| Having Perfect Intentions | Community->Law |
| Heifer Project International | International->Guatemalan |
| High Performance Indicator | Business->Positions |
| High Performance Insulation | Governmental->NASA |
| High Power Illuminator | Governmental->Military |
| High-Pressure Isolation | Academic & Science->Electronics |
| Himpunan Pramuwisata Indonesia | Business->Firms |
| Hire Purchase Information | Business->General |
| History of Present Illness | Medical->Physiology |
| Hit Points Inflicted | Community->Sports |
| Hobby Products International | Business->Firms |
| Holes Per Inch | Miscellaneous->Unit Measures |
| Human Poverty Index | Governmental->United Nations |
| Hurricane Protection Industries | Academic & Science->Meteorology |
| Hybrid Polarization Interferometry | Academic & Science->Physics |
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