PSDI
| Acronym | Definition |
|---|---|
| PSDI | Pin Service Denial Indicator |
| PSDI | Partito Socialista Democratico Italiano (Italian: Italian Democratic Socialist Party; est. 1947) |
| PSDI | Presence-Sensing Device Initiation |
| PSDI | Public Safety Data Interoperability (US DOJ) |
| PSDI | Programming Skills Development Institute (India) |
| PSDI | Physical Symptoms Distress Index (cardiology) |
| PSDI | Public Service Directory Interactive |
| PSDI | Project Software Development Incorporated |