| Acronym | Definition |
|---|
| CGS | Centimeter, Gram, Second (system of units) |
| CGS | Championship Gaming Series (electronic sports league) |
| CGS | California Geological Survey (formerly the California Department of Mines and Geology) |
| CGS | Council of Graduate Schools (Washington, DC, USA) |
| CGS | Center for Genetics and Society |
| CGS | Connecticut General Statutes |
| CGS | Center for Governmental Studies |
| CGS | College of General Studies (Boston University) |
| CGS | Cost of Goods Sold (accounting) |
| CGS | Corporate Governance Score |
| CGS | Common Ground Station |
| CGS | Council for Geoscience (South Africa) |
| CGS | College Park Airport |
| CGS | Chief of General Staff |
| CGS | Colorado Geological Survey |
| CGS | Continuous Grain Silicon (Sharp) |
| CGS | Conjugate Gradient Squared |
| CGS | Contemporary Glass Society |
| CGS | Church of the Good Shepherd (Bloomington, Indiana) |
| CGS | Coast Guard Station |
| CGS | Come Get Some (gaming clan) |
| CGS | Common Ground System |
| CGS | Command and General Staff College |
| CGS | Crescent Girls' School (Singapore) |
| CGS | Commonwealth Governor's School (Northern VA) |
| CGS | Camberwell Grammar School (Melbourne, Australia) |
| CGS | Campus Girl Scouts (USA) |
| CGS | Cap Gemini Sogeti |
| CGS | Canadian Goat Society (Ottawa, Ontario, Canada) |
| CGS | Caulfield Grammar School |
| CGS | Caulfield Grammar School (Melbourne, Australia) |
| CGS | Canadian Geriatrics Society |
| CGS | Computer General Studies |
| CGS | Coast Geological Society (Ventura, California) |
| CGS | Communications Ground Segment |
| CGS | Centimetro–Grammo–Secondo |
| CGS | California Gourd Society |
| CGS | Cottage Garden Society (England, UK) |
| CGS | Coast & Geodetic Survey |
| CGS | Columbus Ground System |
| CGS | Camp Grady Spruce (Graford, TX) |
| CGS | Common Graphics System |
| CGS | China Geological Survey Bureau |
| CGS | Common Ground Segment |
| CGS | Collaboration on Government Secrecy (Washington College of Law) |
| CGS | CONUS Ground Station (US DoD) |
| CGS | Core Ground System |
| CGS | Color Graphics System |
| CGS | Communications Gateway System |
| CGS | Canadian Geologic Survey |
| CGS | Colorado Gerontological Society |
| CGS | Combined Ground System |
| CGS | Copper Gallium Selenide (compound semiconductor) |
| CGS | Crayons, Glue, and Scissors |
| CGS | Commander General Staff |
| CGS | California Glass Studio |
| CGS | Center for Groundwater Science |
| CGS | Computer Generated Sound |
| CGS | Costeas Geitonas School (Athens-Pallini, Greece) |
| CGS | Commercial Generator Set |
| CGS | Committee on Geological Sciences |
| CGS | Comparative Grain Size |
| CGS | Center for Globalization Studies |
| CGS | Common Geospatial-Intelligence System |
| CGS | Continuous Guided Scrambling |
| CGS | Centre National des Recherches en Génie Parasismique (French) |
| CGS | Constrained Gibbs Sampler (Linear Equalization) |
| CGS | Commercial Gateway Segment |
| CGS | Coarse Grid Scan |
| CGS | Command Generation System |
| CGS | Common Gateway System |
| CGS | Coset Generation System |
| CGS | Community Girls School |