| Acronym | Definition |
|---|
| CSO➣Chief Security Officer (corporate title) |
| CSO➣Combined Sewer Overflow |
| CSO➣Central Statistics Office (Ireland) |
| CSO➣Civil Society in Order |
| CSO➣Chicago Symphony Orchestra |
| CSO➣Central Statistical Office (UK Government Office) |
| CSO➣Computer Security Officer |
| CSO➣Chief Sales Officer (corporate title) |
| CSO➣Cincinnati Symphony Orchestra. |
| CSO➣Civil Society Organization |
| CSO➣Chief Scientific Officer (corporate title) |
| CSO➣Central Statistical Organisation (Delhi, India) |
| CSO➣Columbus Symphony Orchestra (Columbus, GA) |
| CSO➣Computational Sciences and Optimization |
| CSO➣Certified Specialist in Oncology Nutrition |
| CSO➣Chief Strategy Officer (corporate title) |
| CSO➣Ceská Spolecnost Ornitologická (Czech: Czech Society for Ornithology) |
| CSO➣Chief Sustainability Officer (corporate environmental title) |
| CSO➣Chief Spiritual Officer (various organizations) |
| CSO➣Critical Skills Operator (US Marine Corps) |
| CSO➣Chief Scientist Office (Scottish Government Health Directorates; UK) |
| CSO➣Centre de Sociologie des Organisations |
| CSO➣Colorado Symphony Orchestra |
| CSO➣Common Stock Outstanding |
| CSO➣Campus Safety Officer |
| CSO➣Chief Security Officer |
| CSO➣Customer Solutions Online |
| CSO➣C Shared Object |
| CSO➣Cluster Supporting Object |
| CSO➣Computing Services Office |
| CSO➣Composite Second Order Beat |
| CSO➣Chief Scientific Officer |
| CSO➣Contract Sales Organization |
| CSO➣Caltech Submillimeter Observatory |
| CSO➣Cap Sud Ouest (French employment agency) |
| CSO➣Campus Security Officer |
| CSO➣Community Service Officer (law enforcement) |
| CSO➣Central Selling Organization (diamond industry) |
| CSO➣Company Security Officer |
| CSO➣Charleston Symphony Orchestra (Charleston, SC) |
| CSO➣Conservatoire Supérieur d'Ostéopathie (French: Superior Conservatory of Osteopathy) |
| CSO➣Committee of Senior Officials |
| CSO➣Chief Staff Officer |
| CSO➣Chief Signal Officer |
| CSO➣Center for Special Operations (USSO COM) |
| CSO➣Customer Service Officer |
| CSO➣Cambridge Symphony Orchestra (Cambridge, MA) |
| CSO➣Czech Statistical Office |
| CSO➣Community Service Obligation |
| CSO➣Composite Second-Order (distortion) |
| CSO➣Consulting Services Organization |
| CSO➣Community Support Officer |
| CSO➣Central Services Organization |
| CSO➣Chief Solutions Officer (corporate title) |
| CSO➣Commissioners Standard Ordinary (insurance mortality tables) |
| CSO➣Central Services Office(Montana) |
| CSO➣Customer Service Organization |
| CSO➣Cycles since Overhaul (aviation) |
| CSO➣Central Support Office (various companies) |
| CSO➣Consumer Safety Officer |
| CSO➣Combat Systems Officer |
| CSO➣Club Subaquatique d'Onex (French diving club) |
| CSO➣Centre Subaquatique Orléanais (French diving club) |
| CSO➣Community Services Officer |
| CSO➣Charlotte Symphony Orchestra |
| CSO➣Client Service Orientation (various organizations) |
| CSO➣Contract Support Office |
| CSO➣Clinical Skills Online (UK) |
| CSO➣Competitive Sourcing Official |
| CSO➣Cadbury Schweppes Overseas (UK) |
| CSO➣Communications Support Organization (US DoD) |
| CSO➣Colour Separation Overlay (Chroma-Key) |
| CSO➣Connecticut Southern (railroad) |
| CSO➣Corporate Social Opportunity |
| CSO➣Car Sharing Organization |
| CSO➣Customer Support Office |
| CSO➣Concours de Saut d'Obstacle (France) |
| CSO➣Catholics Speak Out |
| CSO➣Construction Safety Officer (Canada) |
| CSO➣Child Support Order |
| CSO➣Central Seismological Observatory (India) |
| CSO➣Court Services Officer |
| CSO➣Child Support Officer |
| CSO➣Centre Social Okupat |
| CSO➣Cognizant Security Office |
| CSO➣Christian Science Organization |
| CSO➣Center for Student Opportunity (Bethesda, MD) |
| CSO➣Child Support Obligation |
| CSO➣Compact Symmetric Object |
| CSO➣Cobb Symphony Orchestra (Marietta, Georgia) |
| CSO➣Client Services Office |
| CSO➣Customer Special Order |
| CSO➣Citizens Support Organization |
| CSO➣Customer Service and Operations |
| CSO➣Computer Surplus Outlet |
| CSO➣Content Standards Objectives (various organizations) |
| CSO➣Closely-Spaced Object |
| CSO➣Caretaker Site Office (US Navy) |
| CSO➣Compensated Sapphire Oscillator |
| CSO➣Car-Seal Open (valve condition) |
| CSO➣Catholic Students Organization |
| CSO➣Custom Scenery Object (aka Custom Scenery; also seen as CS; Atari) |
| CSO➣Craniostenosis |
| CSO➣Clinical Support Officer |
| CSO➣Chief Suitability Officer (corporate title) |
| CSO➣Campus Service Officer |
| CSO➣Collateralised Synthetic Obligation |
| CSO➣Computer System Operator |
| CSO➣Command Security Officer |
| CSO➣Commissary Officer |
| CSO➣Concurrent Servicing Operations |
| CSO➣Cadet Second Officer |
| CSO➣Compulsory Stock Obligation (UK fuel tax) |
| CSO➣Communications-Computer Systems Officer |
| CSO➣Customer Satisfaction Opportunity |
| CSO➣Client Support Operations |
| CSO➣Composite Signals Organization |
| CSO➣Curvature of the Second Order |
| CSO➣Chandler Symphony Orchestra (Chandler, AZ) |
| CSO➣Copper-Sensitive Operon |
| CSO➣Communication Service Order |
| CSO➣Collateral Security Obligation |
| CSO➣Commercial Solicitation Officer |
| CSO➣Constant Scheduling Offset |
| CSO➣Combat Systems Operations (AMSEC) |
| CSO➣Claim Service Office (Insurance) |
| CSO➣Centralized Sellers Office |
| CSO➣Crowthorne Symphony Orchestra (UK) |
| CSO➣Cheerfully Start Over |