| CESR | Carrier Ethernet Switch Router 
| Others |
| CESR | Carrier Ethernet Switches and Routers
| Others |
| CESR | Center for Earth Systems Research
| Others |
| CESR | Center for Economic and Social Research
| Others |
| CESR | Center for Economic and Social Rights
| Others |
| CESR | Center for Education on Social Responsibility
| Others |
| CESR | Center for Environmental Systems Research
| Others |
| CESR | Center for Ergonomics and Safety Research
| Others |
| CESR | Centre for Employment Studies Research
| Others |
| CESR | Certificate of Eligibility for Specialist Registration
| Others |
| CESR | Certificate of Eligibility of Specialist Registration
| Others |
| CESR | Certificates of Eligibility for Specialist Registration
| Others |
| CESR | Committee of European Securities Regulators
| Others |
| CESR | Core Environmental Stress Response
| Others |
| CESR | Cornell Electron Storage Ring
| Others |
| CESR | Corporate Environmental and Social Responsibility
| Others |