| Abbreviation | Definition |
|---|---|
| HQR | Handling Qualities Rating |
| HQS | High Quality Scans |
| HR | High Rate |
| HR | Historical Record |
| HR | HouR |
| HR | Hydrogen Relief |
| HRAA | High Rate Acquisition Assembly |
| HRAP | High Resolution Accelerometer Package |
| HRC | Hasselblad Reflex Camera |
| HRD | Hatch Restraint Device |
| HRD | High Rate Dosimeter |
| HRDA | High Rate Data Assembly |
| HRDM | High Rate De-Multiplexer |
| HRDR | High Rate Digital Recorder |
| HRDS | High Rate Data Station |
| HRF | Human Research Facility |
| HRFM | High Rate Frame Multiplexer |
| HRI | High Resolution Imager |
| HRIR | High Resolution Infrared Radiometer |
| HRL | Horizontal Reference Line |