| Acronym | Definition |
|---|
| PDDI➣Product Definition Data Interface |
| PDDI➣Perfect Digit-to-Digit Invariant (mathematics) |
| PDDI➣Parallel-Design Distributed-Implementation |
| PDDI➣Perhimpunan Donor Darah Indonesia (Indonesian: Indonesian Association of Blood Donors) |
| PDDI➣Potential Drug-Drug Interaction |
| PDDI➣Pennsylvania Digital Divide Initiative (Pennsylvania Service-Learning Alliance; Philadelphia, PA) |