ECW may refer to:

Professional wrestling

  • Extreme Championship Wrestling (formerly Eastern Championship Wrestling), a professional wrestling promotion that operated from 1992 to 2001
  • ECW on TNN, a professional wrestling television program produced by the original promotion from 1999 to 2000
  • The Alliance (professional wrestling) (originally the WCW/ECW Alliance), a 2001 World Wrestling Federation stable that included Extreme Championship Wrestling
  • ECW (WWE), a World Wrestling Entertainment brand and television program from 2006 to 2010 based on the Extreme Championship Wrestling promotion


  • 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


  • Eastern Coach Works, a defunct bus body building company from England
  • ECW (file format), an enhanced compressed wavelet file format designed for geospatial imagery
  • ECW Press, a Canadian book publisher