{{wiktionary|CEI|cei}} '''CEI''' may refer to:
==Organizations== * Central European Initiative, a forum of regional cooperation in Central and Eastern Europe * Clean Energy Institute, a renewable energy research institute at the University of Washington, in Seattle, Washington, US * Cleveland Electric Illuminating Company, a defunct American utility company * College of Eastern Idaho, a public community college in Idaho Falls, Idaho, US * Commission électorale indépendante (Democratic Republic of the Congo) or Independent Electoral Commission, former name of the Independent National Electoral Commission * {{ill|Independent Electoral Commission (Ivory Coast)|lt=Commission électorale indépendante (Ivory Coast)|de|Unabhängige Wahlkommission (Elfenbeinküste)|fr|Commission électorale indépendante (Côte d'Ivoire)}} or Independent Electoral Commission, body that oversees elections in Ivory Coast * Competitive Enterprise Institute, an American libertarian think tank * {{lang|it|Conferenza Episcopale Italiana}} or Episcopal Conference of Italy, conference of Roman Catholic bishops * Council of Engineering Institutions, later the Engineering Council, a British regulatory authority * Creative Engineering, Inc., American company * Cycle Engineers' Institute, a screw thread pattern, see British Standard Whitworth
==Other uses== * Chicago and Eastern Illinois Railroad * Child exploitation imagery, a category of illegal or harmful online content * Common Electrical I/O, interoperability agreements * Comparably efficient interconnection * Corporate Equality Index of US businesses regarding LGBT people * IATA code for Chiang Rai International Airport, Thailand
==See also== * Cei (surname)
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