Organizations
* Cambridge International Examinations, an international examination board * Center for International Education at the University of Massachusetts-Amherst * Cleveland Institute of Electronics, a private technical and engineering educational institution * International Commission on Illumination (''Commission internationale de l'éclairage'') * Companion of the Order of the Indian Empire (C.I.E.) * Computability in Europe, an international organization of computability theorists, computer scientists, mathematicians * CIÉ (Córas Iompair Éireann), the Irish state transport authority * Council on Islamic Education * Transportes Aéreos Cielos Andinos, ICAO code: CIE * Civil Information and Education Section (CIE), General Headquarters, the Supreme Commander for the Allied Powers in Japan (1945–1952)Science and technology
* CIE 1931 color space, one of the first mathematically defined color spaces, created by the International Commission on Illumination (CIE) in 1931 * , Spanish for International Classification of Diseases * Commercial Information Exchange, a real estate database for commercial properties, similar to a residential Multiple Listing Service (MLS) * Computer Interrupt Equipment, a form of discrete interrupt controller in Ferranti computers * Congenital ichthyosiform erythroderma, a skin disease * Control and Indicating Equipment * Carbon Isotope Excursion, a rapid release of carbon to the ocean or atmosphere.Other uses
* ''Corpus Inscriptionum Etruscarum'', the known body of Etruscan inscriptions * Cie, the abbreviation for the French ("company") * Italian electronic identity card ()See also
* LaCie (), a computer equipment company * * * * CIES (disambiguation), CIES (disambiguation) {{disambiguation