| Rank | Abbreviation | Meaning |
|---|
| ***** | CCEI | Centro de Ciências da Economia e Informática
| |
| **** | CCEI | Contrato de Compra de Energia Incentivada
| |
| **** | CCEI | California Council of Electronics Instructors
| |
| **** | CCEI | Craftmaster Contour Equipment, Inc.
| |
| **** | CCEI | Corporate Commitment to Environmental Improvement
| |
| **** | CCEI | Councils on Chiropractic Education International
| |
| *** | CCEI | Curriculum, Culture and Educational Inquiry
| |
| *** | CCEI | Comisión Católica Española de la Infancia
| |
| *** | CCEI | Center for Coal and Energy Index
| |
| *** | CCEI | Coordinadora Comarcal de l'Esquerra Independentista
| |
| *** | CCEI | Crown-Crisp Experiential Index
| |
| ** | CCEI | Crown Crisp Experimental Index
| |
| ** | CCEI | Clark County Environmental International
| |
| * | CCEI | ChildCare Education Institute
| |
| * | CCEI | Connecticut Center for Entrepreneurship & Innovation
| |
| * | CCEI | Consortium of Continuing Education Institutions
| |
| * | CCEI | Canadian Centre for Energy Information
| |
| * | CCEI | California Counsel of Electronics Instructors
| |
| * | CCEI | Capital City Education Initiative
| |