| Acronym | Definition |
|---|
| PIERS➣Progress in Electromagnetics Research Symposium |
| PIERS➣Port Import Export Reporting Service (US DOC) |
| PIERS➣Port Import-Export Reporting System |
| PIERS➣Pace Institute for Environmental and Regional Studies (New York) |
| PIERS➣Passport Information Electronic Retrieval System |
| PIERS➣Prevention, intelligence, Enforcement, Reassurance and Support (policing slogan) |
| PIERS➣Program on Innovative Employment Relations Systems (Michigan State University) |