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