| Acronym | Definition |
|---|
| HEP | High Energy Physics |
| HEP | High Efficiency Particulate (air filters) |
| HEP | Hydroelectric Power |
| HEP | High Encryption Pack (Microsoft) |
| HEP | Higher Education Perspectives (journal; Canada) |
| HEP | High School Equivalency Program |
| HEP | Home Exercise Plan (health care) |
| HEP | High End Processor |
| HEP | Hal-Ehwal Pelajar (University of Malaysis student affairs office) |
| HEP | Hautes Ecoles Pedagogiques (French: Teaching Colleges; various locations) |
| HEP | High Energy Particle |
| HEP | Hankyu Entertainment Park (Osaka, Japan) |
| HEP | Hydro Electric Project |
| HEP | Habitat Evaluation Procedure |
| HEP | Home Exercise Program (physical therapy) |
| HEP | Higher Education Program (various organizations) |
| HEP | Hospital Education Program (University of Virginia) |
| HEP | Hispanic Employment Program |
| HEP | Hierosolyma Est Perdita (Latin: Jerusalem Is Lost; pogrom attacker cry) |
| HEP | Head-End Power |
| HEP | High-Explosive Plastic |
| HEP | Human Error Probability |
| HEP | High Egg Passage (vaccine production) |
| HEP | Heterogeneous Element Processor |
| HEP | Home Equity Prepayment |
| HEP | Hubbell Electrical Products |
| HEP | Hall Effect Pickup (automotive) |
| HEP | Human Exceptionalism Paradigm |
| HEP | Heterogeneous Multiprocessor |
| HEP | Head End Processor (ATM) |
| HEP | Hrvatska Elektroprivreda Ltd (Croatia) |
| HEP | Hub Expansion Port |
| HEP | Human Engineering Program |
| HEP | Hydraulic Energy Products, Inc (Denver, CO) |
| HEP | Harvard Evolution Page |
| HEP | Household Evaluation Program |
| HEP | Health, Education and Enforcement Partnership (Canada) |
| HEP | Hic Est Positus/Posita (Latin: Here He/She Was Laid, epigraphy) |
| HEP | Huygen's Equivalence Principle |