| Acronym | Definition |
|---|
| HEIDI | Hpems Electronic Integrated Desktop Interface |
| HEIDI | Higher Education Information Database for Institutions (UK) |
| HEIDI | Higher Education Interactive Diagnostic Inventory (Netherlands) |
| HEIDI | High Energy Imaging Device |
| HEIDI | Harmonisation of European Incident Definitions Initiative (European Organisation for the Safety of Air Navigation) |
| HEIDI | Harbor Engineering Investigation and Design Institute (now CCCC Third Harbor Consultants Co., Ltd.; China) |
| HEIDI | Human-Environment-Interaction Dynamics Initiative (Ohio University) |