CTW may refer to: Carat (mass) total weight, related to diamond jewellery CentralWorld, a shopping mall complex in Thailand Change to Win Federation, the former name of the Strategic Organizing Center, a group of United States labor unions Children's Television Workshop, former name of Sesame Workshop Computer Technology Workshop activity at the Joint Statistical Meetings Context tree weighting, a lossless compression and prediction algorithm Crypt The Warchild, an American rapper West TV, with the callsign CTW-32