Act, ACT, or The Act may refer to:

Arts and entertainment Theatre and drama Acting, an activity in which a story is told by means of its enactment by an actor who adopts a character Act (drama), a major division or unit of drama, including plays, films, operas, ballets, or musicals A Contemporary Theatre (ACT), now Union Arts Center, in Seattle, Washington, US American Conservatory Theater, in San Francisco, California, US

Music Act (band), a British band ACT (Swedish band), a Swedish band The Act (band), a 1980s Norwegian rock band ACT Music, a German music label ACT (album), by Ben Wendel, Harish Raghavan, and Nate Wood, 2009 Act (EP), by Kang Daniel, 2024 Acts (album), by RNDM, 2012 The Act (musical), 1977 UnoTheActivist (Troy Vashon Donte Lane, born 1996), or The Act, American rapper

Film and television The Act (1989 film), a 1989 British television film by Richard Langridge The Act (TV series), a 2019 true crime TV series The Act (video game), 2007

Business and organizations Businesses AdaCore, formerly Ada Core Technologies, Ada specialist software company Advanced Cell Technology, Inc, now Astellas Institute for Regenerative Medicine Advanced Computer Techniques, an American software company 1962–1994 Applied Computer Techniques, later Apricot Computers Atria Convergence Technologies, a telecommunications company in India Aviation Composite Technology, an aircraft manufacturer in the Philippines

Education ACT (for-profit organization) ACT (test), a standardized test used for college admissions in the United States. Asian College of Technology, Cebu City, Philippines Australian College of Theology, now Australian University of Theology

Political organizations Act (Brazil), a political party Act! (Italy), a political party ACT-CIS Partylist, a political organization in the Philippines ACT New Zealand, a political party Agir (France) (French, 'Act'), a political party Alliance for Change and Transparency, a political party in Tanzania Alliance of Concerned Teachers, a political organization in the Philippines America Coming Together, an American political action group

Professional organizations Academy of Clinical Thyroidologists, US American College of Toxicology Association for Citizenship Teaching, UK Association of Corporate Treasurers, UK

Other organizations ACT Alliance, an alliance of churches provide humanitarian aid ACT Alberta, a Canadian coalition to raise awareness about human trafficking ACT for America, an anti-Islam advocacy group in the US Action for Children's Television, an American advocacy group Addenbrooke's Charitable Trust, a British charity Advanced Concepts Team, a research team of the European Space Agency Allied Command Transformation, a NATO strategic command Amazon Conservation Team, a non-profit organization that works to protect the Amazon rainforest Anglican Church in Thailand Association for Children with Life-threatening and Terminal conditions (ACT), now Together for Short Lives, a British children's charity Association of Commercial Television in Europe Australian Civic Trust, an urban design organization

Law Act (document), an instrument that records a fact or something that has been said, done, or agreed Notarial act Act of parliament, passed by the legislative body of a jurisdiction Act of Parliament (United Kingdom) Act of Congress, United States Act of Tynwald, Isle of Man Acting (law), temporarily exercising the powers of a vacant position Advance corporation tax, a tax collected in the UK until 1999

Science and technology Computing Act! LLC, a customer relationship management software ACT (Nasdaq) (Automated Confirmation of Transactions), a system for reporting and clearing trades Apple Certified Trainer, one of the Apple certification programs

Medicine Acceptance and commitment therapy, a type of cognitive-behavioral therapy Activated clotting time, a test of coagulation Adoptive cell transfer, transfer of cells into a patient, usually immune system cells Artemisinin-based combination therapies (ACTs) for malaria Assertive community treatment, an approach for community mental health service delivery

Other uses in science and technology ACT (audio format) Act or S-act, a semigroup action in algebra and theoretical computer science Astrographic Catalog/Tycho or Tycho-2 Catalogue, an astronomical catalogue Atacama Cosmology Telescope, in Chile

Transportation Air ACT, a Turkish airline AC Transit, a bus transit operator in San Francisco Bay Area, US Agency for Community Transit Inc., operator of Madison County Transit services in the US Azienda comunale del traffico, a former transport operator in Lugano, Switzerland Puerto Rico Highways and Transportation Authority () Ford ACT, a 1970s people mover system Ascot railway station, Berkshire, England, station code ACT Waco Regional Airport, in Texas, US, IATA airport code ACT

Other uses ACT mouthwash, produced by Opella North America Achterhooks, a Dutch dialect, ISO 639-3 language code act American Canadian Tour, a stock car racing series Australian Capital Territory, an internal territory of Australia, containing the capital city Canberra Courtney Act, Australian drag queen and TV personality

See also AC-T (disambiguation) Behavior Acting rank, temporary military rank ACT-R, a symbolic cognitive architecture Association of Cinematograph, Television and Allied Technicians (ACCT), UK