Act

Act or ACT may refer to:

Arts and entertainment

• Acting, theatrical performance
• Act (drama), a segment of a play or opera
• Musical act
• Act (band), a British band
• A.C.T, a Swedish band
• ACT Music, a German music label
• ACT Theatre, in Seattle, Washington, US
• American Conservatory Theater, in San Francisco, California, US
• Acts, a 2012 album by American band RNDM

Businesses and organisations

Businesses

• 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
• Association for Competitive Technology
• Atria Convergence Technologies, a telecommunications company in India
• Aviation Composite Technology, an aircraft manufacturer in the Philippines

Educational institutions

• Asian College of Technology, Cebu, Philippines
• Australian College of Theology
• ACT (nonprofit organization)
  • ACT (test), for college admission, US

Government and military

• Advanced Concepts Team, a research team of the European Space Agency
• Agency for Community Transit, Madison County Transit's paratransit system
• Allied Command Transformation, a NATO strategic command
• Azienda comunale del traffico, a former transport operator in Lugano, Switzerland

Professional associations

• Academy of Clinical Thyroidologists
• American College of Toxicology
• Association for Citizenship Teaching
• Association of Cinematograph Television and Allied Technicians
• Association of Corporate Treasurers

Sports organizations

• Australia national cricket team
• American Canadian Tour, a race organisation

Other organizations

• 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
• Action for Children's Television, an organization dedicated to improvements in children's television
• Addenbrooke's Charitable Trust
• The Association of Commercial Television in Europe, a group which represents the business interests of the commercial television sector at the EU institutions
• Alliance for Change and Transparency, a political party in Tanzania
• Alliance of Concerned Teachers, an alliance of teachers, educators and teacher organizations in the Philippines
  • ACT Teachers Partylist, their political party
• Amazon Conservation Team, a non-profit organization that works in partnership with indigenous people to protect the Amazon rainforest
• America Coming Together, a US political group
• Anglican Church in Thailand
• 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
• ACT! for America, a hate group

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

• Ascot railway station, UK, National Rail code
• Waco Regional Airport, Texas, US, IATA airport code
• Australian Capital Territory, the territory in which the Canberra, Australia is seated

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

Other uses

• ACT mouthwash, produced by Chattem
• Acting (rank), temporary military rank
• Achterhooks, ISO 639-3 language code