| Acronym | Definition |
|---|
| SPDI➣Sony Philips Digital Interface |
| SPDI➣Secreted Protein Discovery Initiative |
| SPDI➣Static Placement, Dynamic Issue |
| SPDI➣Sustainable Policy Development Institute |
| SPDI➣Students Promoting Dominican Ideals (Dominican University of California) |
| SPDI➣Single Point Directional Interchange (roadways) |