| Acronym | Definition |
|---|
| SLPI➣Secretory Leukocyte Protease Inhibitor (saliva protein) |
| SLPI➣Sri Lanka Press Institute |
| SLPI➣Student Leadership Practices Inventory |
| SLPI➣Southern Lakes Planning Initiative |
| SLPI➣Streptomyces Lividans Protease Inhibitor (biochemistry) |