| Acronym | Definition |
|---|
| PIEC➣Planet Immigration & Education Consultancy (Australia) |
| PIEC➣Provisional Independent Electoral Commission (Gambia) |
| PIEC➣Predicted Initial Environmental Concentration (ecology) |
| PIEC➣Pacific Islands Environment Conference (US EPA) |
| PIEC➣Province Interagency Executive Committee (USDA) |
| PIEC➣Principal Investigator Executive Committee |
| PIEC➣Public Issues Education Center (University of Arkansas Cooperative Extension Service) |