Act

Act or ACT may refer to:
Arts and entertainment
A.C.T, a Swedish band
Act (band), a British band
ACT, a fictional South Korean K-pop boygroup from HBO Max's Brazilian streaming television series Além do Guarda Roupa
Act (drama), a segment of a dramatic or musical work (such as a play, opera, or ballet)
ACT Music, a German music label
ACT Theatre, in Seattle, Washington, US
Acting, theatrical performance
Acts, a 2012 album by American band RNDM
American Conservatory Theater, in San Francisco, California, US
Business organizations
AdaCore, formerly Ada Core Technologies, Ada specialist software company
Advanced Cell Technology, stem cell company
Advanced Computer Techniques, a U.S. software company 1962–1994
Applied Computer Techniques, later Apricot Computers, UK
Atria Convergence Technologies, a telecommunications company in India
Aviation Composite Technology, an aircraft manufacturer in the Philippines
Education
ACT (nonprofit organization), provides assessments etc. for US school students etc.
ACT (test), for college admission, US
Asian College of Technology, Cebu City, Philippines
Australian College of Theology
Government / military
AC Transit, a transit agency serving Alameda and Contra Costa Counties, California
Advanced Clean Trucks Regulation, a rule made by the California Air Resources Board which requires trucks to decarbonize
Advanced Concepts Team, a research team of the European Space Agency
Agency for Community Transit, a paratransit system for Madison County Transit, Illinois
Allied Command Transformation, a NATO strategic command
Azienda comunale del traffico, a former transport operator in Lugano, Switzerland
Political parties and campaigning/advocacy groups
ACT Alberta, a Canadian coalition to raise awareness about human trafficking
ACT Alliance, an alliance of churches for coordinating humanitarian assistance and development work
ACT New Zealand, a political party in New Zealand
ACT-CIS Partylist, a political party in the Philippines
ACT Teachers Partylist, a political party in the Philippines
ACT! for America, an advocacy group in the United States
Action for Children's Television, an organization dedicated to improvements in children's television
Agir (France) (French for Act), a political party in France
Alliance for Change and Transparency, a political party in Tanzania
Amazon Conservation Team, a non-profit organization that works to protect the Amazon rainforest
America Coming Together, a US political group
Professional organizations
Academy of Clinical Thyroidologists, United States
Alliance of Concerned Teachers, Philippines
American College of Toxicology
Association for Citizenship Teaching, UK
Association for Competitive Technology, international association of software developers
Association of Cinematograph, Television and Allied Technicians, UK
Association of Corporate Treasurers, UK
Sports
Australia national cricket team
American Canadian Tour, a stock car racing series
Other organizations
ACT (now Together for Short Lives), a children's charity in the United Kingdom
Addenbrooke's Charitable Trust, a UK charity
Anglican Church in Thailand
The Association of Commercial Television in Europe, a group which represents the business interests of the commercial television sector at the EU institutions
Associated Container Transport (ACT) a consortium of five British shipping companies - Ben Line, Blue Star Line, Cunard (Port Line), Ellerman Lines and the Harrison Line
Law
Act (document), a document recording the legality of a transaction or contract
Acting (law) refers to someone temporarily exercising the powers of a vacant position
Act of Parliament, Act of Congress, or Act of Tynwald, a statute or law passed by a legislature
Advance corporation tax, a tax collected in the UK until 1999
Places
Australian Capital Territory, the territory in which the Australian capital city of Canberra is seated
Transport
ACT, the IATA code for Waco Regional Airport, Texas, US
ACT, the National Rail code for Ascot railway station, Berkshire, UK
Science, technology, and mathematics
Computing
ACT-R, a symbolic cognitive architecture
Apple Certified Trainer, one of the Apple certification programs
ACT (NASDAQ), Automated Confirmation of Transactions, a trade reporting and clearing system
Act! CRM, Contact Management and CRM software
Medicine
Acceptance and commitment therapy, a type of cognitive-behavioral therapy
Acetylcholine, (ACt/ACh) a neurotransmitter
Activated clotting time
Adoptive cell transfer, transfer of cells into a patient, usually immune system cells
Artemisinin based combination therapy, a treatment for malaria
Assertive community treatment, a system for treating mental illness
Other uses in science, technology, and mathematics
Act or S-act, the action of a monoid on a set, or a semiautomaton
ACT (audio format), a file format
Ford ACT, a transit system
Astrographic Catalog/Tycho or Tycho-2 Catalogue
Atacama Cosmology Telescope, Chile
ACT, a codon for the amino acid Threonine
Other uses
ACT mouthwash, produced by Chattem
Behavior
Acting (rank), temporary military rank
Achterhooks, ISO 639-3 language code, a Dutch dialect
Courtney Act, Australian drag queen, singer, and television personality