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)

CIE 1931 color space, one of the first mathematically defined color spaces, created by the International Commission on Illumination (CIE) in 1931
{{lang|es|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.