| Corporate Europe Observatory | Academic & Science |
| Career Education Opportunity | Academic & Science |
| Children's Education Opportunity | Academic & Science |
| Collegiate Entrepreneurs' Organization | Academic & Science |
| Center for Economic Opportunity | Academic & Science |
| Centre for Earth Observation | Academic & Science |
| Costs Evened Out | Accounts and Finance |
| Waco Kungo | Airport Code |
| Center for Equal Opportunity | Associations & Organizations |
| Creating Excellent Organizations | Business |
| Chiropractic Elite Organization | Business |
| Catch Every Obstacle | Business |
| Customer Employee Organization | Business |
| Capacity Exposure Optimization | Business |
| Competitive Edge Opportunities | Business |
| Commitment, Empathy, and Ownership | Business |
| Chief Economic Officer | Business |
| Coastal Engineering (de-listed) | Business |
| Commercial Electronic Office | Business |
| Customers, Employees, and Owners | Business |
| Constantly Evaluating Others | Business |
| Chief Energy Officer | Business |
| Clarity, Energizing, and Organization | Business |
| Chief Executive Officer | Business Organization |
| Center for Educational Opportunity | Community |
| Creating Exceptional Opportunities | Community |
| Cedars Estates Organization | Community |
| Catholic Education Office | Community |
| Creating Extraordinary Outcomes | Community |
| Career Education Options | Community |
| Creating Educational Opportunities | Community |
| Christian Entrepreneur Organization | Community |
| Children Embracing Ownership | Community |
| Community Education and Outreach | Community |
| Christmas and Easter Only | Community |
| Campaign to End Obesity | Community |
| Community Effort Orlando | Community |
| Chief Evangelistic Officer | Community |
| Conscientiously Energetic Overacting | Community |
| Classroom Environment Officer | Community |
| Circle Education Officer | Community |
| Christian Entrepreneurial Overcomers | Community |
| Computer Energy Organizer | Computer Hardware |
| Complete Enterprise Option | Computing |
| Comprehensive Electronic Office | Computing |
| Can't Execute Overclocking | Computing |
| Cobham, Esher, and Oxshott; Surrey, England | Country Specific |
| Canine Endorsement Oh | General |
| C*nt Eternally Open | General |
| Cosmic Engagement Officer | General |
| Creative Energetic and Optimistic | General |
| Completely and Entirely Out | General |
| Chief Evaluation Office | General |
| C**** Eating Oldie | General |
| Certified Egoistic Organizer | General |
| Chevrolet Estate Optra | General |
| Club Evo Owners | General |
| Chery Eastar Owners | General |
| Cutting Everything Out | General |
| Cheap Entertaining Opponent | General |
| Cheesy Executive Overdresser | General |
| Chief Executioner Omnipotent | General |
| Chief Executor of Off-shoring | General |
| Company Entertainer Octopus | General |
| Citrus Entity Overlord | General |
| Cranky Evil Ogre | General |
| Caribbean Elephants Organization | General |
| Clown Executive Officer | General |
| Cheese Eating Official | General |
| Consulting Engineers of Ontario | General |
| Check Email Only | General |
| Chief Entertainment Officer | General |
| Cheif Executive Officer | General |
| Center for Effective Organizations | General |
| Corrupt Executive Officer | General |
| Can't Even Operate | General |
| Chief executive officerCEO | General |
| come early and on | General |
| Can't Eat Out | General |
| Chief Eating Officer | General |
| Creating Every Opportunity | General |
| Consider Employment Options | General |
| Chief Executive Officers | General |
| Chief Everything Officer | General |
| Cranky Eccentric Oldster | General |
| Chief Enterprise Officer | General |
| Chief Embezzling Offender | General |
| Customer Engagement Online | General |
| Creating Entrepreneurial Opportunities | General |
| Chief Excessive Officer | General |
| Chocolate Espresso Oatmeal | General |
| Cool English Only | General |
| Chief Emotional Officer | General |
| Chief Executives Organization | General |
| Caustic Ego Online | General |
| Economic Outlook | Governmental |
| Chief Execution Order | Governmental |
| Commission on Economic Opportunity | Governmental |
| Center for Employment Opportunities | Governmental |
| Commonwealth Employment Opportunities | Governmental |
| Code Enforcement Officer | Governmental |
| Central Economics Office | Governmental |
| Civil Enforcement Officer | Governmental |
| Chief Electoral Officer | Indian Government |
| Chief Elf of Operations | Jobs |
| Chief Engineering Officer | Jobs |
| Chief Evangelist Officer | Jobs |
| Chief Exercise Operator | Jobs |
| Chief Ethics Officer | Jobs |
| Chick Embryo Origin | Medical |
| Career Ending Opportunity | Military and Defence |
| Controlling Every Objective | Military and Defence |
| Ceremonial Events Officer | Military and Defence |
| Covert Elite Operations | Military and Defence |
| Chief Engagement Officer | Military and Defence |
| Chief Executing Officer | Military and Defence |
| Central Elite Operations | Military and Defence |
| Current Engine Option | Regional |
| Championship Event Organizer | Sports |
| Waco Kungo Airport | Transport & Travel |
