ECF

ECF can refer to European Climate Forum, a platform for joint studies and science-based stakeholder dialogue on climatic change
Economic Cooperation Foundation, a non-governmental entity in Israel
Elemental chlorine free, a form of paper bleaching
English Chess Federation, the governing chess organisation in England
European Cyclists' Federation, an umbrella organisation for European cycling organisations
European Cultural Foundation, an independent European foundation
Extracellular fluid, a medical term
Epirubicin, Cisplatin, Fluorouracil, a chemotherapy regimen
Electronic Case Filing System, an automated system for prosecution of criminal offenses
Electronic Court Filing, the automated transmission of court documents between legal agencies and courts.
Eclipse Communication Framework, a framework for supporting the development of distributed Eclipse-based tools and applications.
[http://www.research.att.com/~njas/sequences/A133593 Exact continued fraction]
Eye Control Focus
Electrochemical fluorination, technology for production of fluorocarbons
Enterprise Capital Fund, a UK-specific type of Venture capital.
Eastern Conference Finals, the championship series of the NBA's Eastern Conference, whose winner advances to the NBA Finals each year
Early Cancellation Fee is a charge levied when a party wants to break the term of an agreement or long-term contract.

Translation

The word "ECF" occurs as such in the following languages: English, German, Japanese, Finnish.