| Contact Centre Outsourcing | Academic & Science |
| Cytochrome C Oxidase | Academic & Science |
| Customer Collection Order | Accounts and Finance |
| Carimagua | Airport Code |
| Chief Compliance Officer | Banking |
| Check Cashing Outlet | Business |
| Cameco Corporation | Business |
| Center for Career Opportunities | Business |
| Cosmetics Company Outlet | Business |
| Cosmetic Company Outlet | Business |
| Crane Certification Organization | Business |
| Career Changing Opportunity | Business |
| Cellebrite Certified Operator | Business |
| Cornerstone Consulting Organization | Business |
| Chemical Control Order | Chemistry |
| Cataloging Cultural Objects | Community |
| Center for Community Outreach | Community |
| California Community Opportunities | Community |
| Cataloguing Cultural Objects | Community |
| Communities Creating Opportunity | Community |
| Columbia Community Outreach | Community |
| Cornerstone Community Outreach | Community |
| Coalition for Christian Outreach | Community |
| Calvary Chapel Oceanside | Community |
| Chief Community Officer | Community |
| Catholic Christian Outreach | Community |
| Councils Clubs and Organizations | Community |
| Crossroads Community Online | Community |
| Community Corrections Officers | Community |
| Cincinnati Chamber Orchestra | Community |
| Community Compassion Outreach | Community |
| Chinese Christian Outreach | Community |
| Columbia Chronicle On-line | Community |
| Connection Configuration Object | Computing |
| Certified Conversion Optimization | Computing |
| Continuous Cost Optimization | Computing |
| Cloud Cost Optimization | Computing |
| Crest Cyber Olympiad | Computing |
| Canadian Computing Olympiad | Computing |
| Cyber Crime Operation | Computing |
| Chief Cloud Officer | Computing |
| Ccore | Cryptocurrency |
| Xbtx Btx Graphics File | File Type |
| Cyberchat Operational Data | File Type |
| Contest Club Ontario | General |
| Clear Channel Outdoor | General |
| Coordinated Care Organizations | General |
| Chief Content Officer | General |
| Compassion Conviction Optimism | General |
| Converter Circuit Breaker | General |
| Cockpit Cutoff Angle | General |
| Coordinated Care Organization | General |
| Composition Comprehension Oral | General |
| Caucasian Creative Officer | General |
| Contra Communem Opinionem | General |
| Chief Commercial Officer | General |
| Creative Content Officer | General |
| Concealed Carry Officer | General |
| Consumer Choices Option | General |
| Chief Controlling Officer | General |
| Ca Org | General |
| Chief Communication Officer | General |
| Care Coordination Organization | General |
| Contract Change Order | General |
| Chief Cookie Officer | General |
| Clothing Connection Online | General |
| Chief Communications Officier | General |
| Communicative Constitution of Organizations | General |
| Catalytic Converter Oxidation | General |
| Converter Clutch Override | General |
| Corvette Club of Orlando | General |
| Climate Control Operations | General |
| Clutch Cut Off | General |
| Celica Club Oberfranken | General |
| Cabriolet Club Ostschweiz | General |
| Concealed Carry Officers | Governmental |
| Conjunction of Criminal Opportunity | Governmental |
| Council Controlled Organisation | Governmental |
| Crime Control Organization | Governmental |
| CHICHOLI | Indian Railway Station |
| Chief Customer Officer | Jobs |
| Chief Creative Officer | Jobs |
| Customer Care Officer | Jobs |
| Cervical Compression Overloading | Medical |
| Cancer Care Ontario | Medical |
| Clinical Care Options | Medical |
| Continuous Cardiac Output | Medical |
| Community Care Officer | Medical |
| Coordinate Care Organisation | Medical |
| Close Combat Optic | Military and Defence |
| Central Control Officer | Military and Defence |
| Combat Cargo Officer | Military and Defence |
| Command and Control Office | Military and Defence |
| Complex Contingency Operation | Military and Defence |
| Contingency Contracting Officer | Military and Defence |
| Center for Complex Operations | Military and Defence |
| Cisco Connection Online | Networking |
| Carimagua, Colombia | Regional |
