| Acronym | Definition |
|---|
| PSIA➣Pounds per Square Inch Absolute |
| PSIA➣Professional Ski Instructors of America |
| PSIA➣Paris School of International Affairs |
| PSIA➣Political Science and International Affairs (various schools) |
| PSIA➣Profit Sharing Investment Account (finance) |
| PSIA➣Program for Science and International Affairs (various schools) |
| PSIA➣Pounds per Square Inch Atmosphere |
| PSIA➣Public Security Investigation Agency (Japan) |
| PSIA➣Poverty and Social Impact Analyses (International Monetary Fund) |
| PSIA➣Private Schools Interscholastic Association (Grapevine, TX) |
| PSIA➣Public Safety Information Act |
| PSIA➣Position Specific Isotope Analysis |