CES

CES may stand for:

Closed ecological system, an ecosystem that does not rely on matter exchange with any part outside the system
Constant elasticity of substitution, an economics production function
The ISO 639 code for the Czech language
Ces, the note C♭ in German; it is sometimes used as a designation of key in musical titles, such as Ces-Dur (C flat major)

Technology

Consumer Electronics Show, a consumer electronics trade show held each January in Las Vegas, Nevada
Corpus Encoding Standard, an application of SGML for standardizing the encoding of text corpora
Circuit Emulation Service is an emerging telecommunication technology to transmit legacy TDM or ATM services over Packet Switched Network (PSN) such as Ethernet, IP or MPLS networks
Customer experience systems, integrated business and operational support systems
Cockroach Exterminating Services.

Cauda equina syndrome, a serious neurological condition
Cranial electrotherapy stimulation, a medical therapy used in the treatment of anxiety, depression, insomnia, and drug addiction
Camurati-Engelmann disease, also called "Camurati Engelmann syndrome" (CES)

Caspian Engineers Society, non-profit organisation developing “Engineering Culture” across the Caspian region, promoting engineering awareness among the public and sparking the interest of young generation in engineering.^[1]
Center for Economic Studies, University of Munich
Center for Ethical Solutions
Centre for Environmental Studies, former UK research organization
Church Educational System, the educational arm of The Church of Jesus Christ of Latter-day Saints
Coalition for Economic Survival, a Los Angeles based community organization
Coalition of Essential Schools, an organization created to further a type of whole-school reform
Common Economic Space
- Common Economic Space or Single Economic Space, a project of economical integration of Belarus, Kazakhstan, Russia and Ukraine
- Common Economic Space or Common European Economic Space, one of four projected spheres of cooperation between the EU and Russia
Community Exchange System, an online buying and selling alternative marketplace originating in South Africa
Commonwealth Employment Service (now part of Centrelink), the former Australian Government employment agency
Confédération Européenne de Scoutisme or Confederation of European Scouts
Centre for European Studies (disambiguation), the name of several educational institutions
Community Exchange System