CIE

CIE may refer to:

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
 * Clasificación Internacional de Enfermedades, 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 compagnie ("company")