Organizations
- Cambridge International Examinations, an international examination board
- Cleveland Institute of Electronics, a private technical and engineering educational institution
- French: Commission Internationale de l'Eclairage — the International Commission on Illumination
- the CIE 1931 color space developed by the International Commission on Illumination
- French: Compagnie ivoirienne d'électricité, the national electrical company in Ivory Coast
- Companion of the Order of the Indian Empire (C.I.E.)
- Computability in Europe, an international organization of computability theorists, computer scientists, mathematicians
- Council on Islamic Education
- Córas Iompair Éireann, the Irish state transport authority
- Transportes Aéreos Cielos Andinos, ICAO code CIE
- Center for International Education (CIE) at the University of Massachusetts-Amherst
- Computers and Industrial Engineering, an international conference focused on industrial engineering and its applications.
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