ACU

ACU may refer to:

Computing

 * Address computation unit, another name for address generation unit
 * Automatic Client Upgrade, a facility within the Novell Open Enterprise Server

Education

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

Organizations

 * Acu Publishing, an imprint of the German group VDM Publishing devoted to the reproduction of Wikipedia content
 * Altura Credit Union, a credit union in California
 * American Conservative Union, a political lobbying group in the US
 * 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
 * Auto-Cycle Union, the governing body of motorcycle sport in Great Britain

Military

 * Assault Craft Unit, military units of the US Navy that specialize in amphibious warfare
 * Army Combat Uniform, the combat uniform worn by the US Army, US Air Force, and US Space Force

Transportation

 * Achutupo Airport, Achutupo, Panama (IATA code ACU)
 * Auto-Cycle Union, an officially recognised motorcycle governing body of the UK
 * Automovil Club del Uruguay, a member of the Fédération Internationale de l'Automobile

Geography

 * Açu, municipality in the state of Rio Grande do Norte, Brazil
 * Açu River, another name for the Piranhas River in Brazil
 * Pariquera-Açu, a municipality in the state of São Paulo in Brazil
 * Superporto do Açu, an industrial port complex in the state of Rio de Janeiro in Brazil

Other uses

 * ACU (Utrecht), a music venue in Utrecht, the Netherlands
 * ACU, a codon for the amino acid threonine
 * Armored Command Unit, the key unit in the RTS video game Supreme Commander
 * Asian Currency Unit, a proposed unit of currency for Asia and Oceania
 * Assassin's Creed Unity, a game set during the French Revolution