| Acronym | Definition |
|---|
| PPDI➣Pharmaceutical Product Development Inc. (Wilmington, NC) |
| PPDI➣Partai Penegak Demokrasi Indonesia (Indonesian: Indonesian Democracy Party; Indonesia) |
| PPDI➣Past and Present Directions (Plymouth State University course; Plymouth, NH) |
| PPDI➣Pastoralist Peace and Development Initiative |
| PPDI➣Persatuan Pembebasan Dari Indonesia |