| Consumer Electronic Control | Academic & Science |
| Campus Events Commission | Academic & Science |
| Central Electric Cooperative | Academic & Science |
| Early College | Academic & Science |
| Colombia Education Center | Academic & Science |
| Continuing Education Credit | Academic & Science |
| Columbia Education Center | Academic & Science |
| Colorado Early Colleges | Academic & Science |
| Class Executive Committee | Academic & Science |
| Custom Electronic Catalog | Academic & Science |
| Critical Exponential Correction | Academic & Science |
| Casa de Economii si Consemnatiuni | Academic & Science |
| Crescent City (ca) | Airport Code |
| Communications Engineering Company | Business |
| Career Enrichment Center | Business |
| Commodities Exchange Center | Business |
| C E C Entertainment, Inc. | Business |
| Certificate of Educational Convenience | Business |
| Continental Engineering Corporation | Business |
| Certified Enterprise Coaches | Business |
| Creative Edge Corporation | Business |
| Chuck E Cheese | Business |
| Certified E-Commerce | Business |
| Certified Enterprise Coach | Business |
| Career Education Corporation | Business |
| Certified Executive Chef | Certifications |
| Cation Exchange Capacity | Chemistry |
| Community Engagement Collaborative | Community |
| Community Enrichment Center | Community |
| Consortium for Educational Change | Community |
| Child Educational Center | Community |
| Community Education Center | Community |
| Commission on Education and Communication | Community |
| Community Engagement Center | Community |
| Corrective Education Company | Community |
| Council For Exceptional Children | Community |
| Continuing Education Centre | Community |
| Continuing Episcopal Church | Community |
| Charismatic Episcopal Church | Community |
| Community Education Coalition | Community |
| Cambodian Evangelical Church | Community |
| Conservation Education Centre | Community |
| Community Education Centers | Community |
| Central Executive Committee | Community |
| Continuing Education Courses | Community |
| European Committee for Standardization | Computer and Networking |
| Canadian Electric Code | Computer and Networking |
| Clear Enter Clear | Computer Assembly Language |
| Commission of European Communities | Computing |
| Certificate Enrollment Control | Computing |
| Conference on E-Commerce | Computing |
| Cisco Employee Connection | Computing |
| Citrix Expert Center | Computing |
| Certified e-Business Consultant | Computing |
| Certified e-Commerce Consultant | Computing |
| Cebu Eastern College | Educational Institute |
| Cell Evaluation Chip | Electronics |
| Consumer Electronics Control | Electronics |
| Coordination and Evaluation Center | General |
| Comprehensive ESRD Care | General |
| Chuck E Cheeses | General |
| Concurrent Established Connections | General |
| Curriculum Enhancement Class | General |
| Chief Executive Councillor | General |
| Construction Equipment Company | General |
| Cabin Equipment Center | General |
| Contaminants of Emerging Concern | General |
| Center for Endometriosis Care | General |
| Chicagoland Entrepreneurial Center | General |
| Cross Entropy Clustering | General |
| Chocolate Egg Cream | General |
| Crankcase Emission Control | General |
| Custom Engine Control | General |
| Computerized Engine Control | General |
| Customer Experience Center | General |
| Combination Emission Control | General |
| Computerized Emission Control | General |
| Chevrolet El Camino | General |
| Chery Eastar Club | General |
| Consolidated Engine Controller | General |
| Carro Esporte Clube | General |
| Colorado Extended Cab | General |
| Change in Employee Compensation | Governmental |
| Community Environmental Centre | Governmental |
| Clean Energy Coalition | Governmental |
| Community Environmental Council | Governmental |
| Clean Energy Collective | Governmental |
| Clean Energy Center | Governmental |
| Community Environmental Center | Governmental |
| Construction Electrician's Mate Chief Petty Officer | Governmental |
| Citizens Environmental Coalition | Governmental |
| Contractor Establishment Code | Governmental |
| Chief Election Commissioner | Governmental |
| China Electricity Council | Governmental |
| Commission for Environmental Cooperation | Governmental |
| Committee on Energy and Commerce | Governmental |
| Combat Engagement Center | Governmental |
| Commonwealth Engineers Council | Governmental |
| Certificado de Existencia de Crédito | International |
| Community Engagement Committee | Medical |
| Cardiac Evaluation Center | Medical |
| Comprehensive ESRD (End-Stage Renal Disease) Care | Medical |
| Central Electronic Complex | Military and Defence |
| Computer Engineering Center | Military and Defence |
| Cooperative Engagement Capability | Military and Defence |
| Civil Engineer Corps | Military and Defence |
| California Energy Commission | Physics Related |
| Crescent City, California USA | Regional |
| Coordinating European Council | Regional |
| Catamaran Europe Central | Regional |
| Canadian Electrical Code | Regional |
| Consumer Electronics Controller | Softwares |
| Control Electronics Container | Space Science |
| Control Encoder Coupler | Space Science |
| Commodities Exchange Center, Inc | Stock Exchange |
