CESI may refer to:
- European Confederation of Independent Trade Unions, a regional trade union federation representing 8 million members of independent trade unions in Europe;
- Centro Elettrotecnico Sperimentale Italiano, a company that provides testing and certification services, energy consultancy, engineering and technology consulting for the electricity sector worldwide.
- China Electronics Standardization Institute, an institute for standardization in electronics and IT industry authorized by the Chinese Ministry of Information Technology Industry for adoption and enforcement of national informations standards
- Common Enterprise Streaming Infrastructure, a standard for the reliable optimization of video delivery from any source, scalable over time without costly and labor-intensive network upgrades, meeting or exceeding enterprise security requirements.
|This disambiguation page lists articles associated with the title CESI.
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