CSO

CSO or C.S.O. may refer to:

Occupations

 * Chief scientific officer
 * Chief Scientist Office of the Scottish government
 * Chief security officer
 * Chief services officer
 * Chief Signal Officer (U.S. Army)
 * Chief strategy officer
 * Chief sustainability officer
 * Combat systems officer (U.S. Air Force)
 * Community service officer
 * Police community support officer
 * Sales manager (chief sales officer)
 * Chief of Space Operations, the head of the United States Space Force

Orchestras

 * Canberra Symphony Orchestra
 * Canton Symphony Orchestra
 * Carmel Symphony Orchestra
 * Charleston Symphony Orchestra
 * Charlotte Symphony Orchestra
 * Chicago Symphony Orchestra
 * Christchurch Symphony Orchestra
 * Cincinnati Symphony Orchestra
 * Colorado Symphony Orchestra
 * Columbia Symphony Orchestra
 * Columbus Symphony Orchestra

Organizations

 * Bureau of Conflict and Stabilization Operations, at the US Department of State
 * Centers for Space Oceanography
 * Central Statistical Organisation, India
 * Central Statistics Office (Ireland)
 * Central Statistics Organization, Afghanistan
 * Civil society organization
 * Coastal States Organization
 * Community Service Organization
 * Conference of Solidarity Support Organizations
 * Czech Statistical Office

Other

 * Caltech Submillimeter Observatory, Mauna Kea, Hawaii
 * Carbonyl sulfide
 * CCSO Nameserver
 * Colour-separation overlay, an alternative term for chroma key visual processing
 * Combined sewer overflow
 * Composante Spatiale Optique, a 2019 French spy satellite
 * Compulsory stock obligation
 * Computer Science Ontology
 * Counter-Strike Online, a Free MMOFPS made by Nexon
 * CSO Online, an online publication (Computer Security Online)
 * Magdeburg–Cochstedt Airport in Saxony Anhalt, Germany (IATA airport code CSO)