| Abbreviation | Definition |
|---|---|
| HCSM | Heritage Conservation and Site Management |
| HDCM | High Definition Compression Management |
| HDCM | Higher Diploma in Cooperative Management |
| HDM | Health Data Management |
| HDM | Highway Data Management |
| HDM | Highway Development and Management |
| HDM | Holland Destination Management |
| HDM | Host Device Management |
| HDM | Houston Drilling Management |
| HDMS | Health Data Management Solutions |
| HDMS | Hellenic Data Management Symposium |
| HEM | Hydrography Event Management |
| HEMIS | Higher Education Management Information System |
| HEMP | Hazards Effects Management Process |
| HEMS | Home Energy Management System |
| HEMS | Home Energy Management Systems |
| HEMS | HUD Enforcement Management System |
| HEMS | Humanitarian Entrants Management System |
| HERMES | Health and Education Research Management and Epidemiologic Services |
| HERMES | Highly Extensible Relationship Management Engine Solution |