| PIEE | Pakistan International Education Exhibition 
| Others |
| PIEE | Pilot Incentives in Energy Efficiency
| Others |
| PIEE | Precourt Institute for Energy Efficiency
| Others |
| PIEE | Primary Integrating Enriching Education
| Others |
| PIEE | Process to Improve Expenditure Efficiency
| Others |
| PIEE | Procurement Integrated Enterprise Environment
| Others |
| PIEE | Program of International Educational Exchange
| Others |
| PIEE | Psychoanalytic Institute for Eastern Europe
| Others |