GCER
| Acronym | Definition |
|---|---|
| GCER | Gloucestershire Centre for Environmental Records (UK) |
| GCER | Génie du Composite Étude et Réalisation (French: Composite Engineering Study and Realization) |
| GCER | Global Conference on Educational Robotics (annual conference) |
| GCER | Gold Country Endurance Riders (California) |