| Acronym | Definition |
|---|
| HDR | High Dynamic Range |
| HDR | High Dose Rate |
| HDR | Header |
| HDR | Herr der Ringe (German: Lord of the Rings) |
| HDR | Heavy Duty Rotary (machine tool) |
| HDR | Hickory Daily Record (Hickory, NC) |
| HDR | High Data Rate |
| HDR | Higher Degree Research (education) |
| HDR | High Definition Resource |
| HDR | Hard Disk Recorder |
| HDR | High Definition Range |
| HDR | Host Data Replicator |
| HDR | High Definition Rendering |
| HDR | High Definition Recording |
| HDR | Hot Dry Rock |
| HDR | Habilitations à Diriger des Recherches (French: Accreditation to Supervise Research; various universities) |
| HDR | High Definition Radio |
| HDR | Humanitarian Daily Ration |
| HDR | Health Data Repository |
| HDR | Heavy Duty Repairman |
| HDR | High-Definition Rendering |
| HDR | Henningson Durham and Richardson (Architecture and Engineering Firm) |
| HDR | Human Dimensions Research |
| HDR | Heissdampfreaktor (German: Hot Steam Reactor) |
| HDR | Human Development Resources |
| HDR | Hyper Dimensional Resonator |
| HDR | Home Dockyard Regulations (US Navy) |
| HDR | Hard Drive Restore |
| HDR | Highly Dent Resistant (trasnportation feature) |
| HDR | High Desert Roundup (California) |
| HDR | Help Desk Request |
| HDR | High Dose Remote Afterloading |
| HDR | Human Developments Report |
| HDR | Hardware Design Review |
| HDR | Historical Data Record |
| HDR | Hardware Development Requirements |
| HDR | Hemispherical Dielectric Resonator |
| HDR | Half-sized Diazo Reproducible drawing |
| HDR | Hybrid Detail Record |
| HDR | Host Data Replication (SNA Server) |
| HDR | Half-Duplex Relay |