CWU may refer to:
Trade unions Christian Workers' Union, Belize Communication Workers Union (Ireland) Communication Workers Union (South Africa) Communication Workers Union (Trinidad and Tobago) Communication Workers Union (United Kingdom) Communication Workers Union of Australia Congressional Workers Union, United States Culinary Workers Union, United States
Universities Central Washington University, Ellensburg, Washington, United States Central Women's University, Dhaka, Bangladesh China Women's University, Beijing, China
Other Church Women United, United States, an ecumenical association Colliers Wood United F.C., London, England Crowhurst railway station, England
Czechoslovak Women's Union Wuhan Airlines, China