CSO

The initialism CSO may mean:

• Caltech Submillimeter Observatory (Mauna Kea, Hawaii)
• Any of a number of government statistical organizations:
  • Central Statistical Office in Poland & UK
  • Central Statistics Office (Ireland)
  • Czech Statistical Office (Český statistický úřad, ČSÚ, sometimes also abbreviated CZSO)
• Chicago Symphony Orchestra
• Cincinnati Symphony Orchestra
• Chief Science Officer
• Chief Scientist Office
• Chief security officer
• Chief strategy officer
• Chief Sales Officer
• Chief sustainability officer
• Civil Society Organization
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• Columbus Symphony Orchestra
• Combat Systems Officer (U.S. Air Force)
• Combined sewer overflow
• Community Support Officer (UK)
• Community Service Officer (US)
• Compulsory Stock Obligation
• Consumer Safety Officer, a position title used by the United States Food and Drug Administration
• Contract sales organization
• .CSO, compressed file format for ISO disc images.
• Counter-Strike Online
• Credit Spread Option
• Czech Society for Ornithology (Česká společnost ornitologická, ČSO)