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 ()
- Computability in Europe, an international organization of computability theorists, computer scientists, mathematicians
- CIÉ (), the Irish state transport authority
- Council on Islamic Education
- , 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
- Companion of the Order of the Indian Empire (C.I.E.)
- , the known body of Etruscan inscriptions
- C<sup>ie</sup>, the abbreviation for the French ("company")<!--Seen in this Google Books cover https://books.google.com/books?id=8pwLAAAAYAAJ&printsec=frontcover -->
- Italian electronic identity card ()
See also
- (), a computer equipment company
- CIES (disambiguation)