CESR
# CESR

CESR may refer to:

* Center for Economic and Social Rights, an international human rights organization
* Centre d'Etude Spatiale des Rayonnements, now the Institut de Recherche en Astrophysique et Planétologie (IRAP), in France
* Committee of European Securities Regulators, replaced since 2011 by the European Securities and Markets Authority (ESMA)
* Cornell Electron Storage Ring, a particle accelerator operated by Cornell University, in Ithaca (state of New York)
* Carrier Ethernet Switches and Routers, a marketing term
