CSU

The acronym CSU may refer to:

*A propeller's constant speed unit which regulates engine speed by automatically changing pitch.

Any of the following universities or university systems
*Cagayan State University system (Philippines)
*California State University system (U.S.A.)
*Central South University, Hunan (China)
*Central State University, Ohio (U.S.A.)
*Charles Sturt University, (Australia)
*Charleston Southern University Charleston, South Carolina (U.S.A.)
*Chicago State University Chicago, Illinois (U.S.A.)
*Cleveland State University, Ohio (U.S.A.)
*Colorado State University (U.S.A.)
*Columbus State University, Georgia, (U.S.A.)
*Connecticut State University system (U.S.A.)Or,

*Channel Service Unit - a WAN equivalent of a network interface card.
*Christian Social Union of Bavaria ("Christlich-Soziale Union in Bayern"), a political party in Bavaria, Germany.
*Crime Scene Unit - in some police groups this refers to crime scene investigators who respond to a crime scene.
*Constant speed unit - a mechanical device in aircraft to keep engine (and propeller) speed constant
*C Start Up - in computing, the initial start up code for compiled C (and C-based languages). See also CRT for C Run-Time.
*ČSÚ (Český statistický úřad), Czech Statistical Office
* CSU is the ICAO airline designator for Chari Aviation Services, Chad