| Acronym | Definition |
|---|
| GCES | Gulf Comparative Education Society (est. 2008) |
| GCES | Gorman Crossing Elementary School (Maryland) |
| GCES | Green Chemistry Expert System (US EPA) |
| GCES | Glen Canyon Environmental Studies |
| GCES | Gestion Conservatoire de l'Eau, de la Biomasse et de Fertilité des Sols (French: Management Conservatory Water, Biomass and Soil Fertility) |
| GCES | Gulf Coast Engineered Solutions (Woodlands, TX) |
| GCES | Gandaki College of Engineering & Science (Népal) |
| GCES | General Crop Estimation Survey (agriculture scheme; India) |
| GCES | Gulf Coast Experiment Station (Florida) |