CW

CW may stand for:

Science and technology

 * centiwatt (cW), one hundredth of a watt
 * Cω, a programming language
 * CW complex, a type of topological space
 * Carrier wave, in radio communications
 * CodeWarrior, an integrated development environment by Metrowerks
 * Constructed wetland, a man-made wetland to treat wastewater
 * Continuous wave, a method of radio transmission (telegraphy) that carries Morse code, and a microwave theory
 * ClarisWorks, an office suite now known as AppleWorks
 * Drag coefficient, a measure of air resistance commonly denoted $$\mathbf c_\mathrm w\,$$
 * Contention Window, a network traffic technique
 * chemical formula of tungsten carbide

Gaming

 * Castle Wolfenstein, a 1981 video game
 * Cube World, a video game

Publications

 * Computerworld, an information technology magazine
 * The Crimson White, a student-run newspaper of the University of Alabama

Other media

 * The CW, an American television network/programming service
 * The CW Plus, a national feed of the network
 * Creative writing, any writing that goes outside the bounds of normal professional, journalistic, academic, or technical forms of literature
 * CloverWorks, a Japanese animation studio

Companies

 * Cable & Wireless plc, a British telecommunications company
 * Camping World, an outdoor equipment retailer
 * Colonial Williamsburg
 * Curtiss-Wright, an engineering company (NYSE: CW)

Military

 * Chemical warfare, using the toxic properties of chemical substances as weapons
 * Chemical weapon, munition that uses chemicals formulated to inflict death or harm on humans
 * Chief warrant officer (when followed by a numerical designation of rank), an officer in a military organisation who is designated an officer by a warrant
 * Cold War, a state of geopolitical tension following World War II

Places

 * CW postcode area around Crewe, England
 * Canada West, an obsolete designation for the western part of Canada
 * Canada's Wonderland, an amusement park in Vaughan, Ontario, Canada
 * Cook Islands (FIPS Pub 10-4 and obsolete NATO designation), a self-governing island country in the South Pacific Ocean
 * County Carlow, in Ireland
 * Curaçao (ISO 3166-1 alpha-2 country code CW), a Lesser Antilles island in the southern Caribbean Sea and the Dutch Caribbean region
 * Calw, a city in southern Germany

Other uses

 * Air Marshall Islands (IATA code CW), an airline based in Majuro, in the Marshall Islands
 * Calendar week
 * Christian Worship: A Lutheran Hymnal, a hymnal used by the WELS
 * Clockwise, motion that proceeds in the same direction as a clock's hands
 * Common Worship, a liturgy of the Church of England
 * Conventional wisdom, a description of ideas that are generally accepted as true
 * Cruiserweight (boxing), a weight class in professional boxing between light heavyweight and heavyweight
 * Content warning
 * Culture war
 * C. W. Anderson (born 1970), professional wrestler
 * A suffix for the cool-white halophoshate fluorescent lamp phosphor. See here: Fluorescent-Lamp Formats