PCEI
| Acronym | Definition |
|---|---|
| PCEI | Palouse-Clearwater Environmental Institute (Moscow, ID) |
| PCEI | Parametric Cost Estimating Initiative (US DoD) |
| PCEI | Pew Civic Entrepreneur Initiative (Pew Partnership for Civic Change; Charlottesville, VA) |
| PCEI | Polish Chamber of Exhibition Industry (Glogowska, Poland) |
| PCEI | Porter County Education Interlocal (Valparaiso, IN) |
| PCEI | Presentation Connection Endpoint Identifier |