CEI
Central European Initiative
CEMA
Council for Mutual Economic Assistance
CEMAC
Economic and Monetary Community of Central Africa
CEPGL
Economic Community of the Great Lakes Countries
CEPT
Conference Europeanne des Poste et Telecommunications
CERN
European Organization for Nuclear Research
CIA
Central Intelligence Agency
CICA
Conference of Interaction and Confidence-Building Measures in Asia
CIS
Commonwealth of Independent States
CITES see Endangered Species