| Acronym | Definition |
|---|
| ACU➣Australian Catholic University |
| ACU➣Abilene Christian University (formerly Abilene Christian College; Abilene, TX, USA) |
| ACU➣Army Combat Uniform |
| ACU➣Association of Commonwealth Universities (UK) |
| ACU➣American Conservative Union |
| ACU➣Array Configuration Utility |
| ACU➣Acute Care Unit (hospital care; various locations) |
| ACU➣AFSCME (American Federation of State, County & Municipal Employees) Corrections United |
| ACU➣Association of Credit Unions (various locations) |
| ACU➣Association of Clinicians for the Underserved |
| ACU➣Access Control Unit |
| ACU➣Aironet Client Utility |
| ACU➣Automatic Client Upgrade |
| ACU➣Automatic Call Unit |
| ACU➣Acoustic Sensor |
| ACU➣Arithmetic and Control Unit |
| ACU➣Autodesk Certified User |
| ACU➣Address Calculation Unit |
| ACU➣Address Control Unit |
| ACU➣Assault Craft Unit |
| ACU➣Advanced Control Unit (various companies) |
| ACU➣Antenna Control Unit |
| ACU➣Auto Cycle Union (UK) |
| ACU➣Aironet Client Utility (Cisco tool for managing wireless profiles for use with Aironet PC cards) |
| ACU➣Asian Clearing Union |
| ACU➣Automatic Calling Unit |
| ACU➣Air Conditioning Unit |
| ACU➣Armored Command Unit (gaming; Supreme Commander) |
| ACU➣Alliance Credit Union (various locations) |
| ACU➣Amtscentret for Undervisning |
| ACU➣Asian Congress of Urology |
| ACU➣Auto Call (Calling) Unit |
| ACU➣Alarm Control Unit |
| ACU➣Agrupacion Catolica Universitaria |
| ACU➣Advanced Combat Uniform |
| ACU➣Acquisition Control Unit |
| ACU➣Automóvil Club del Uruguay |
| ACU➣Audio Control Unit |
| ACU➣Airspace Coordination Unit (various locations) |
| ACU➣Automatic Client Update |
| ACU➣African Cinema Unit (University of Cape Town; South Africa) |
| ACU➣Attitude Control Unit |
| ACU➣Avionics Control Unit |
| ACU➣Auxiliary Control Unit |
| ACU➣Acknowledgement Signal Unit |
| ACU➣Antenna Coupler Unit |
| ACU➣Arithmetic & Control Unit |
| ACU➣Arm Computer Unit (NASA) |
| ACU➣Address Calculation Unit (digital electronics) |
| ACU➣Amstrad Computer User (Amstrad CPC magazine) |
| ACU➣Aircraft Control Unit |
| ACU➣Area Common User |
| ACU➣American Church Union |
| ACU➣Acceleration Control Unit |
| ACU➣Autopilot Control Unit (aviation) |
| ACU➣Apron Control Unit (aviation) |
| ACU➣Atlantic Council of Ukraine |
| ACU➣Army Common User |
| ACU➣Actors' Church Union (Church of England organisation for the entertainment industry) |
| ACU➣Automatic Calibration Unit |
| ACU➣Awaiting Class Up |
| ACU➣Assistant C/Unix |
| ACU➣Alarm Concentration Unit |
| ACU➣Air Compressor Unit |
| ACU➣Air Cleanup Unit |
| ACU➣Antenna Combinary Unit |
| ACU➣Analog Conversion Unit |
| ACU➣Ambulatory Cardiac Unit |
| ACU➣Alarm Collection Unit |
| ACU➣Association Centre Univers |
| ACU➣Automatic Coil Unwinder |
| ACU➣Amplifier Converter Unit |