CDU is the Christian Democratic Union, a German political party.
CDU may also refer to:
Education Catholic Distance University, West Virginia Cebu Doctors' University, Philippines Charles Darwin University, Australia Charles R. Drew University of Medicine and Science, California, USA Chengdu University, China
Organizations CentrumDemokraternes Ungdom, a youth organization in Denmark Country Development Unit, a non-governmental organization in Afghanistan
Political parties Cameroon Democratic Union Caribbean Democrat Union Christian Democratic Union (East Germany) Christian Democratic Union (Netherlands) Christian Democratic Union (Ukraine) Croatian Democratic Union Unitary Democratic Coalition, Portugal United Christian Democrats, Italy United Democratic Centre (El Salvador)
Technology Control display unit, in a remotely operated gasfield Control display unit, in an aircraft's flight management system Counter display unit, in a shop Crude oil distillation unit, in an oil refinery
Other uses Cam and Dursley railway station, Gloucestershire, England Clinical decisions unit, a department in some hospitals Camden Airport (New South Wales), IATA airport code "CDU"