| GPES | Garrett Park Elementary School
| Others |
| GPES | General Power Electronics Solver
| Others |
| GPES | General Practice Extraction Service
| Others |
| GPES | General Purpose Electrochemical Software
| Others |
| GPES | Gilbert Plains Elementary School
| Others |
| GPES | Global Politics Economy and Society
| Others |
| GPES | Goal Performance Evaluation System
| Others |
| GPES | Graduate Program in Environmental Science
| Others |
| GPES | Graduate Program on Environmental Sciences
| Others |
| GPES | Ground Parachute Extraction System
| Others |
| GPES | Ground Proximity Extraction System
| Others |