ICW

ICW may refer to:


 * Integrated constructed wetland
 * International Clan War
 * International Community of Women Living with HIV/AIDS
 * International Confederation of Wizards
 * International Council of Women
 * Internet call waiting, a technology that allows a telephone line to accept incoming calls while connected to a dialup connection
 * Intracoastal Waterway
 * Indonesia Corruption Watch
 * Interrupted continuous wave
 * Irish Civil War

Wrestling

 * International Championship Wrestling, a now-defunct professional wrestling promotion based in Lexington, Kentucky, active 1978-1984
 * International World Class Championship Wrestling, a now-defunct New England–based wrestling promotion, known as International Championship Wrestling from 1985 to 1991
 * Insane Championship Wrestling, an active Scottish promotion established in 2006
 * Independent Championship Wrestling, an active American promotion established in 2008, based in Miami, Florida