| Acronym | Definition |
|---|
| CSG | Council of State Governments |
| CSG | Constructive Solid Geometry |
| CSG | Coal Seam Gas |
| CSG | Centre Spatial Guyanais (French: Guiana Space Center) |
| CSG | Computer Support Group |
| CSG | Contribution Sociale Généralisée (French: universal social security contribution) |
| CSG | Carrier Strike Group |
| CSG | Content Services Gateway (Cisco) |
| CSG | Casing |
| CSG | Citrix Secure Gateway |
| CSG | Columbus School for Girls (Columbus, OH) |
| CSG | Counterterrorism Security Group (US) |
| CSG | Commander Submarine Group |
| CSG | Crocodile Specialist Group |
| CSG | Communication Systems Group |
| CSG | Computer Systems Group |
| CSG | Corps Support Group |
| CSG | Consulting Services Group |
| CSG | Customer Solutions Group (HP) |
| CSG | Constructible Strategy Game |
| CSG | Chuckle, Snicker, Grin |
| CSG | Community Service Grant (Public Broadcasting) |
| CSG | Combat Support Group |
| CSG | Connecticut Society of Genealogists (Glastonbury, CT) |
| CSG | Commodore Semiconductor Group |
| CSG | Customer Service Group |
| CSG | Closed Subscriber Group |
| CSG | Command Support Group |
| CSG | Catholic School Girl |
| CSG | Church of the Subgenius (mock religion) |
| CSG | Columbus, GA, USA - Columbus Metropolitan / Fort Benning (Airport Code) |
| CSG | Cryptologic Support Group (NSA) |
| CSG | Cable Services Group |
| CSG | Carrier Services Group |
| CSG | Certified Specialist in Gerontological Nutrition (credential) |
| CSG | Club Systems Group |
| CSG | Charities Safety Group (UK) |
| CSG | Cochrane Style Guide |
| CSG | China South Industries Group Corporation (Beijing, China) |
| CSG | Coldstream Guards |
| CSG | Carrier Services Gateway |
| CSG | Customer Satisfaction Guarantee |
| CSG | Consumer Services Group (Sprint) |
| CSG | Combat Service Group |
| CSG | Compliance and Surveillance Group (Philippines) |
| CSG | Committee for Small Government |
| CSG | California State Grange |
| CSG | cryptologic services group (US DoD) |
| CSG | coordinating subgroup (US DoD) |
| CSG | Community School for the Gifted |
| CSG | Chairman’s Staff Group (US DoD) |
| CSG | CINCPAC Support Group |
| CSG | Command Signal Generator |
| CSG | Common Source Gather (reflection seismology, GPR) |
| CSG | Credit Suisse Groupe |
| CSG | Circle Software Group |
| CSG | Counter-Strike Guard (anti-cheat for counter-strike game) |
| CSG | Cuban Study Group |
| CSG | Climbing Sports Group |
| CSG | Can't Stop Gaming (online gaming community) |
| CSG | Computer Sales Group (Intel) |
| CSG | Cognitive Systems Group (Battelle Memorial Institute research group) |
| CSG | Civil Sealift Group |
| CSG | Color Sergeant |
| CSG | Constrained Stochastic Gradient |
| CSG | Commission on Global Sedimentary Geology (IUGS) |
| CSG | Common Security Guard |
| CSG | Clean Sweep Generator |
| CSG | Collector Source Grading, LLC (toy grading specialists) |
| CSG | Club des Sports de Glace (French: Ice Sports Club) |
| CSG | Cochrane Skin Group (health education) |
| CSG | Child Support Guideline (family law) |
| CSG | Club Sportif Grevenmacher (French: Grevenmacher Sports Club; Grevenmacher, Luxembourg) |
| CSG | Caregiver Support Group (various organizations) |
| CSG | Contrôle Sécurité Gardiennage Privé (French security company) |
| CSG | Cyril Sweett Group (various locations) |
| CSG | Club Sportif de Gravenchon (French sports club) |
| CSG | Centre Saint Guillaume (French: Saint Guillaume Center) |