| Abbreviation | Definition |
|---|---|
| CGA | California Geographic Alliance |
| CGA | Center for Geographic Analysis |
| CGAM | Community and Geography Aware Mobility |
| CGIS | Centre For Geographic Information Systems |
| CGP | Current Geographical Publications |
| CGS | California Geographical Society |
| CGSN | Canadian Gravity Standardization Network |
| COGS | Centre of Geographic Sciences |
| CSA | Combined Statistical Area |
| CSDGM | Content Standard for Geospatial Metadata |
| CToC | Cheese Tornado of California |
| CUTLASS | Crosses Units Title Line Axes Smooth Size |
| CUTLASS | Crosses Units Title Line Axes Smooth Size |
| DGRG | Dictionary of Greek and Roman Geography |
| DHG | Dialogues in Human Geography |
| DMBO | Differential Morphological Building Operator |
| DMSO | Differential Morphological Shadow Operator |
| ECOGEOGRAPHY | Ecogeographic |
| ECOGEOGRAPHY | Ecogeographical |
| EGAD | Environmental and Geographic Analysis Database |