| Acronym | Definition |
|---|
| HDDR➣Hard Disk Drive Retention (computing; various organizations) |
| HDDR➣High Density Digital Recording |
| HDDR➣High Density Digital Recorder |
| HDDR➣Hydrogenation Disproportionation Desorption Recombination |
| HDDR➣Hard Direct Denture Reliners |