ECW

ECW is an abbreviation for:

Eastern Coach Works , former manufacturer of superstructures for buses and rail buses from Lowestoft, England (1912–1987)
EC Wilhelmshaven , several ice hockey clubs in Wilhelmshaven
Eilenburger Chemiewerk , former traditional chemical site in the city of Eilenburg
Enhanced Compressed Wavelet , compression method for raster image data
Extreme Championship Wrestling , an American wrestling organization (1992-2001) and a weekly wrestling show (2006-2010)

EC-W stands for: