CSU

CSU may refer to:


 * Channel service unit, a Wide area network equivalent of a network interface card
 * Chari Aviation Services, Chad, by ICAO airline code
 * Christian Social Union (UK), an Anglican social gospel organisation
 * Christian Social Union in Bavaria, a political party in Bavaria, Germany
 * Chronic spontaneous urticaria, an autoimmune condition
 * Civil Service Union, a defunct trade union in the United Kingdom
 * Constant speed unit, a mechanical device on an aircraft propeller that regulates engine speed by automatically changing pitch
 * Crime Scene Unit, a forensic in some police groups this refers to crime scene investigators who respond to a crime scene
 * Český statistický úřad, Czech Statistical Office

Universities and university systems

 * Cagayan State University, Philippines
 * California State University system, United States
 * Caraga State University system, Philippines
 * Cardinal Stritch University, Milwaukee, Wisconsin, United States
 * Central Sanskrit University, New Delhi, India
 * Central South University, Changsha, Hunan, China
 * Central State University, Ohio, United States
 * Charles Sturt University, Australia
 * Charleston Southern University Charleston, South Carolina, United States
 * Chelyabinsk State University, Chelyabinsk, Russia
 * Cheng Shiu University, Kaohsiung, Taiwan
 * Chicago State University, Chicago, Illinois, United States
 * Clayton State University, Georgia, United States
 * Cleveland State University, Ohio, United States
 * Colorado State University, Fort Collins, Colorado, United States
 * Columbia Southern University, Alabama, United States
 * Columbus State University, Georgia, United States
 * Concordia Student Union, the organization representing undergraduate students at Concordia University in Montreal, Quebec, Canada
 * Connecticut State University System, United States
 * Coppin State University, Baltimore, Maryland, United States