HSDI
| Acronym | Definition |
|---|---|
| HSDI | High Speed Direct Injection |
| HSDI | Herrin Software Development Inc. (est. 2003; Prestonsburg, KY) |
| HSDI | Human Systems Dynamics Institute |
| HSDI | High Speed Data Interface |
| HSDI | High-Speed Digital Imaging (visualization technique) |
| HSDI | Health Self-Determination Index (motivation measurement) |
| HSDI | HCMC (Ho Chi Minh City) Society of Dental Implantology (Vietnam) |