| Meaning | Category |
| Haifa, Israel | Regional->Airport Codes |
| Harry Fox Agency | Community->Music |
| High Frequency Accelerometer | Governmental->NASA |
| High Functioning Autism | Medical->Physiology |
| Holstein Friesian Association | Community->Non-Profit Organizations |
| Horoscope For All | Community |
| Hospice Foundation of America | Community->Non-Profit Organizations |
| Hot Fix Accumulator | Computing->Software |
| Hot Flow Anomaly | Academic & Science->Physics |
| Human Factors Applications, Incorporated | Business->Firms |
| Humane Farming Association | Community->Non-Profit Organizations |
| Humanities and Fine Arts | Academic & Science->Academic Degrees |
| HydroFluoroAlkane-134a | Academic & Science->Chemistry |
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