PSTI
| Acronym | Definition |
|---|---|
| PSTI | Patient Specific Therapeutic Interchange |
| PSTI | Precise Software Technologies Inc (software developers; Ottawa, Ontario, Canada; est. 1989) |
| PSTI | Petroleum Science and Technology Institute (UK) |
| PSTI | PS Technologies, Inc. |
| PSTI | Private Sector Training Institutions (vocational training; various locations) |
| PSTI | Personal Safety Training Inc (Spokane, WA) |
| PSTI | Public Sector Training Institution (Singapore) |