HPDI
| Acronym | Definition |
|---|---|
| HPDI | High Pressure Direct Injection |
| HPDI | Health Products Distributors, Inc. (Oracle, AZ) |
| HPDI | Highway Planning and Design Institute (China) |
| HPDI | Highest Posterior Density Interval |
| HPDI | Human Performance Development International (Romania) |
| HPDI | Harmonic Power Doppler Imaging (medical technology) |