ECW

ECW may refer to:

Professional wrestling

* Extreme Championship Wrestling, a professional wrestling promotion that operated from 1992 to 2001
* "ECW on TNN", a professional wrestling television program of the promotion
* Extreme Championship Wrestling (WWE), a professional wrestling brand of World Wrestling Entertainment

cience and technology

* ECW (file format), an enhanced compressed wavelet file format designed for geospatial imagery
* Ensoniq Concert Wavetable, a set of sound samples used by the Ensoniq AudioPCI

Military

* Electronic counter-warfare, a set of military measures to counteract enemy radars, missile-guidance, etc.
* English Civil War(s), a series of armed conflicts and political machinations which occurred in England from 1642 to 1651

Other

* Eastern Coach Works, a defunct bus body building company from England
* ECW Press, a Canadian book publisher