| Acronym | Definition |
|---|
| CEN | Center |
| CEN | Centralia (Amtrak station code; Centralia, IL) |
| CEN | Comité Européen de Normalisation (French: European Committee for Standardization) |
| CEN | Childhood Emotional Neglect (psychology) |
| CEN | Committee of European Norms (personal protective equipment) |
| CEN | Comité Ejecutivo Nacional (Spanish: National Executive Committee; Mexico) |
| CEN | Carrier Ethernet Network |
| CEN | Consumer Electronics Net |
| CEN | Certified Emergency Nurse |
| CEN | Church of England Newspaper |
| CEN | Centre d'Etude de l'Energie Nucléaire |
| CEN | Chemical and Engineering News |
| CEN | Customer Enterprise Network (various companies) |
| CEN | Community Empowerment Network (Seattle, WA) |
| CEN | Comitato Europeo di Normazione |
| CEN | Centre d'Etudes Nucleaires |
| CEN | Competitive Eating News (New York, NY) |
| CEN | Clean Energy Network, Inc. (est. 1990) |
| CEN | Center for Educational Networking (Michigan) |
| CEN | Constant Enrollment Number (population statistic) |
| CEN | Centre d'Études de la Neige (French: snow study center) |
| CEN | Customs Enforcement Network |
| CEN | China Environment News |
| CEN | Canadian Environment Network |
| CEN | Central Educational Network (Public Television) |
| CEN | Collège des Enseignants de Nutrition (French: College of Teachers of Nutrition) |
| CEN | Cyber Entertainment Network |
| CEN | Chemins de fer Économiques du Nord (French railroad company) |
| CEN | Collège des Enseignants de Neurologie (French: College of Teachers of Neurology) |
| CEN | Caribbean Environmental Network |
| CEN | Création et Édition Numériques (French: Digital Editing and Creation; University of Paris; Paris, France) |
| CEN | Commission Économique de la Nation (French: Economic Commission of the Nation) |
| CEN | Computational Electronics and Nanoelectronics |
| CEN | Content Exchange Network (Asia-Pacific Broadcasting Union) |
| CEN | Client Event Notifier |
| CEN | Cross-Erasure Noise |
| CEN | Comptoir Électronique du Nord (French electronics distributor) |
| CEN | Communication, Electronics, and Navigation |
| CEN | Centre d'Essai Nucléaire (French: Nuclear Test Center) |
| CEN | Ciudad Obregon, Sonora, Mexico (Airport Code) |