ACU

ACU may refer to:

Abilene Christian University, a private Christian university located in Abilene, Texas
Ahram Candian University, a private Egyptian university located in 6 October City, Giza, Egypt
American City University in California or Wyoming
Association of Commonwealth Universities, an association that represents over 480 universities from Commonwealth countries
Australian Catholic University, Australia's only public Catholic university
Ajayi Crowther University,a private Christian university located in Oyo, Oyo State Nigeria

Altura Credit Union, a credit union in California
American Conservative Union, a political lobbying group in the United States
Arab Customs Union, an organization under the Arab League for a Customs Union between Arab Members of the League
Asian Clearing Union, an organization that settles international payments between member countries
Assiniboine Credit Union, a credit union in Manitoba
Acu Publishing, an imprint of the German group VDM Publishing devoted to the reproduction of Wikipedia content

Assault Craft Unit, military units of the United States Navy that specialize in amphibious warfare
Armoured Command Unit, the key unit in the RTS game Supreme Commander
Army Combat Uniform, the combat uniform worn by the United States Army

Achutupo Airport, an airport in Achutupo, Panama with the IATA airport code "ACU"
Auto-Cycle Union, an officially recognised motorcycle governing body of Great Britain
Automovil Club del Uruguay, a member of the Fédération Internationale de l'Automobile