ACA may refer to:
The Academy Award for Best Picture is one of the Academy Awards presented annually since the awards debuted in 1929, by the Academy of Motion Picture Arts and Sciences (AMPAS).
Academi is an American private military company founded in 1997 by former Navy SEAL officer Erik Prince as Blackwater, renamed as XE Services in 2009 and now known as Academi since 2011 after the company was acquired by a group of private investors.
An academic degree is a qualification awarded on successful completion of a course of study in higher education, normally at a college or university.
The Academy Award for Best Original Song is one of the awards given annually to people working in the motion picture industry by the Academy of Motion Picture Arts and Sciences (AMPAS).
Acadia (French: Acadie) was a colony of New France in northeastern North America that included parts of eastern Quebec, the Maritime provinces, and modern-day Maine to the Kennebec River.
Acapulco de Juárez (Spanish: [akaˈpulko de ˈxwaɾes]), commonly called Acapulco, is a city, municipality and major seaport in the state of Guerrero on the Pacific coast of Mexico, 380 kilometres (240 mi) south of Mexico City.