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 musical 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
• Cryogenic energy storage, the use of low temperatures as energy storage

Companies

• ICAO Code designator for China Eastern Airlines

Medicine

• 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)

Military

• Civil Engineer Squadron (U.S. Armed Forces)

Organization

• 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.
• 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 (disambiguation)
• 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

People

• Jean Ces, French boxer of the 1920s