| Abbreviation | Definition |
|---|---|
| CEJ | Chemistry A European Journal |
| CELI | Centre for European Law and Internationalisation |
| CELS | Centre for European Legal Studies |
| CEMR | Council of European Municipalities and Regions |
| CEMS | Central European Management Science |
| CEN | Central European Norm |
| CEN | Comité Européen de Normalisation (in French) European Committee for Standardization |
| CENELEC | Comité Européen de Normalisation Électrotechnique (in French) European Committee for Electrotechnical Standardization |
| CENF | Confederation of European New Federations |
| CENL | Conference of European National Librarians |
| CENL | Conference of European National Libraries |
| CENS | Center for European Neighborhood Studies |
| CEOA | Central Europe Operating Agency |
| CEOA | Central European Operating Agency |
| CEOI | Central European Olympiad in Informatics |
| CEPA | Center for European Policy Analysis |
| CEPD | Chinese European Partnership for Development |
| CEPEJ | Council of Europe European Commission for the efficiency of justice |
| CEPET | Central European Program in Economic Theory |
| CEPI | Central European Policy Institute |