| Rank | Abbreviation | Meaning |
|---|
| ***** | PIES | Physical, Interlectual, Emotional, Social
| |
| ***** | PIES | Protein Interaction Extraction System
| |
| *** | PIES | Personnel Information Exchange System
| |
| *** | PIES | Project Independence Evaluation System
| |
| ** | PIES | Packaged Interchangeable Electronic System
| |
| ** | PIES | Program for International Exchange Study
| |
| * | PIES | Program In Environmental Studies
| |
| * | PIES | Penning Ionization Electron Spectroscopy
| |
| * | PIES | Pollution-Prevention Information Exchange System
| |
| * | PIES | Probability in Engineering and the Sciences
| |
| * | PIES | Preliminary Innovation Evaluation Service
| |
| * | PIES | Partners in Integrated Earth Systems
| |
| * | PIES | Programa de Intervención en Educación Sexual
| |
| * | PIES | POST-INSTALLATION ENGINEERING SUPPORT
| |
| * | PIES | Prevention Information Exchange System
| |
| * | PIES | Product Information Exchange Standard
| |
| * | PIES | Philippine International English School
| |
| * | PIES | Photo Imaging Enhancement System
| |
| * | PIES | Personalised Information Education and Support
| |
| * | PIES | Pollution Prevention Information Exchange
| |
| * | PIES | Pressure Inverted Echo Sounder
| |
| * | PIES | Procurement & Inventory of Equipment System
| |
| * | PIES | Program for Instructional Effectiveness Support
| |
| * | PIES | Palestinian Israeli Environmental Secretariat
| |
| * | PIES | Proximity Immediacy Expectancy Simplicity
| |