| Acronym | Definition |
|---|
| COO | Chief Operating Officer (corporate title) |
| COO | Country of Origin |
| COO | Cost of Opperation |
| COO | Change of Ownership (various organizations) |
| COO | Cost of Ownership |
| COO | Come on Over (Internet slang) |
| COO | Communities of Opportunity (San Francisco, CA) |
| COO | Continuity of Operations |
| COO | Certificate Of Origin |
| COO | Cell of Original |
| COO | Chief Operating Officer |
| COO | Conception Orientée Objet (French: Object-Oriented Design; software development) |
| COO | Centre for Overweight and Obesity (Australia) |
| COO | Chief Ordnance Officer (UK) |
| COO | Certificate of Occupancy (construction code compliance) |
| COO | Caltech Optical Observatories |
| COO | Cell of Origin (mobile telephony) |
| COO | Cessna Owner Organization (aircraft) |
| COO | Conduct of Operations |
| COO | Countries of Operation |
| COO | Chiefs of Ontario (Canada) |
| COO | Conspiracy of One (Offspring song) |
| COO | Consideration of Others |
| COO | Concept of Operation |
| COO | College of Opticians of Ontario (Ontario, Canada) |
| COO | Cotonou, Benin - Cotonou (Airport Code) |
| COO | Cave of Ordeal (video games) |
| COO | Constraint and Object Oriented |
| COO | Children of Opportunity |
| COO | Combined Obstacles Overlay |
| COO | confirmation of ownership |