Acca or ACCA may refer to:

Mythology

• Acca, one of the comrades of Camilla in Greek mythology
• Acca Larentia, goddess in Roman mythology

Organizations

• Aerospace Industries Association, previously the Aeronautical Chamber of Commerce
• Air Conditioning Contractors of America, a trade group for HVAC professionals
• American Clinical and Climatological Association, founded in 1884
• American College Counseling Association
• American Corporate Counsel Association, now Association of Corporate Counsel (ACC), a group for attorneys of private-sector organizations
• Anglican Catholic Church in Australia
• Antiochian Catholic Church in America, one of the Independent Catholic Churches
• Association of Chartered Certified Accountants, a UK-based accountancy body which offers the Chartered Certified Accountant qualification
• Association of Christian College Athletics, an organization of collegiate athletics
• Attenborough Centre for the Creative Arts, an arts centre in Brighton and Hove, UK
• Australian Centre for Contemporary Art, an art gallery in Melbourne
• United States Army Court of Criminal Appeals, an appellate court that reviews certain court-martial convictions of U.S. Army personnel

People

• Three Anglo-Saxon bishops:
  • Acca of Dunwich, 7th century Bishop of Dunwich
  • Acca of Hereford (died c. 764), Bishop of Hereford
  • Acca of Hexham (c. 660 – 740/742), saint and Bishop of Hexham

Science and technology

• Acca (plant), a genus of plants native to South America
• Acetyl-CoA carboxylase, in biology
• Adaptive chosen-ciphertext attack, in cryptography
• Advanced Composite Cargo Aircraft, a project of the US Air Force Research Laboratory

Other uses

• ACCA: 13-ku Kansatsu-ka, a Japanese manga series written and illustrated by Natsume Ono
• Acre, Israel (transliterated as "Acca" from an Arabic spelling)
• Acca, a silk fabric decorated with gold, named for the city
• Accumulator bet, in gambling
• Armed Career Criminal Act, in law
• Acapulco (nightclub), a nightclub in Halifax, England known as the Acca

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