| CESAR | Canadian Expedition to Study the Alpha Ridge 
| Others |
| CESAR | Center for Exascale Simulation of Advanced Reactors
| Others |
| CESAR | Centrul de Studii Pentru Automobile Romanesti
| Others |
| CESAR | Collaboration Environments And Service Architecture For Researchers
| Others |
| CESAR | Community of European Semantic Asset Repositories
| Others |
| CESAR | Continuing Education Students Association of Ryerson
| Others |